Power Engineering MCQ: August 2017

Archive for August 2017

When cooling down a steam boiler that has been taken out of service, a vent valve on the steam drum should be opened to

When cooling down a steam boiler that has been taken out of service, a vent valve on the steam drum should be opened to a) prevent a vacuum from forming...

On boiler cool-down the vent should be opened

On boiler cool-down the vent should be opened a) as soon as the post-purge is completed b) when all temperatures are at ambient value c) any time...

Before removing a boiler from service for maintenance purposes it is beneficial to

Before removing a boiler from service for maintenance purposes it is beneficial to a) inform the Chief Inspector b) do as little as possible with...

Two boilers are feeding into the same steam header and each pressure gage shows a pressure of 350 kPa. The steam pressure gage on the header will indicate

Two boilers are feeding into the same steam header and each pressure gage shows a pressure of 350 kPa. The steam pressure gage on the header will indicate a)...

When raising pressure in a firetube boiler you should: 1. raise steam slowly 2. raise steam as rapidly as possible 3. check the furnace frequently 4. check the system for leaks

When raising pressure in a firetube boiler you should:1. raise steam slowly2. raise steam as rapidly as possible3. check the furnace frequently4. check...

While a boiler is warming up it is good practice to

While a boiler is warming up it is good practice to a) leave all drain valves closed b) check the low water fuel cut-off device for proper operation c)...

A boiler warm-up should

A boiler warm-up should a) be done as quickly as possible b) be done with low water so that metal heats up faster c) be done slowly to minimize any...

When igniting a gas or oil fired boiler you should ignite from: 1. another burner already in service 2. the hot refractory 3. a hand torch 4. an electrical igniter

When igniting a gas or oil fired boiler you should ignite from:1. another burner already in service2. the hot refractory3. a hand torch4. an electrical...

A boiler furnace pre-purge

A boiler furnace pre-purge a) is the shortest step in the start-up sequence b) can take place normally even if there is a low water condition c) must...

Superheater vents are usually opened before firing a boiler to

Superheater vents are usually opened before firing a boiler to a) allow the superheater to warm up quicker b) let the first steam produced act as...

On a boiler fuel system having a double block and bleed set-up

On a boiler fuel system having a double block and bleed set-up a) the vent valve is a normally open valve b) at least one of the main-line valves...

Boiler dry-out means

Boiler dry-out means a) drying out the top and bottom drum b) igniting the dryers in the top drum c) drying out the new refractory d) empty the boiler...

Boiler boiling out procedure should be done

Boiler boiling out procedure should be done a) at operating pressure b) before the dry out procedure c) at one-half the operating pressure d) once...

Before lighting up a boiler you should: 1) purge the furnace 2) open the blow down valve 3) check the fuel supply 4) fill the boiler with water

Before lighting up a boiler you should:1) purge the furnace2) open the blow down valve3) check the fuel supply4) fill the boiler with water a) 1,...

If a new boiler is not properly boiled out, it may result in

If a new boiler is not properly boiled out, it may result in a) tubes rupturing b) a furnace explosion c) nuisance shutdowns d) an unwanted high...

The first duty of the operator coming on shift is to

The first duty of the operator coming on shift is to a) check the safety valve settings b) fill out the log book c) check that water column and...

A boiler inspection

A boiler inspection a) must be done after every shut down of the boiler b) must be done when the boiler inspector requests it c) must be done every...

The external inspection of a boiler

The external inspection of a boiler a) may include making sure the valves are in good operating condition b) may include making sure the furnace refractory...

New refractory must be thoroughly and properly cured with a light fire because

New refractory must be thoroughly and properly cured with a light fire because a) of its high rate of differential expansion b) it may burn if not...

Before starting up any boiler it is necessary that

Before starting up any boiler it is necessary that a) it be properly warmed up b) it be properly purged c) it have a valid inspection certificate d)...

The "deductive approach" and the "inductive approach" are means of achieving this type of paragraph development.

The "deductive approach" and the "inductive approach" are means of achieving this type of paragraph development. A) Chronological B) Spatial C) Comparison...

"Also", "nevertheless", and "consequently" are all examples of what type of cohesion device?

"Also", "nevertheless", and "consequently" are all examples of what type of cohesion device? A) parallel structure B) transition expressions C) pronouns D)...

What do transitional expressions, pronouns, and parallel structure all help achieve in a paragraph?

What do transitional expressions, pronouns, and parallel structure all help achieve in a paragraph? A) unity B) conciseness C) RENNS D) coherence E)...

Paragraph development involving similarities and differences between objects, people or ideas is:

Paragraph development involving similarities and differences between objects, people or ideas is: A) deductive B) process C) comparison and contrast D)...

The five methods of paragraph development are:

The five methods of paragraph development are: A) spatial, comparison, process, reasons, and chronological B) contrast, examples, process, comparison,...

An acronym used in paragraph development is:

An acronym used in paragraph development is: A) NFPA B) CAODC C) TOPIC D) SCOPE E) RENNS Answer: ...

A paragraph development pattern, which may be illustrated by a diamond shape, will have:

A paragraph development pattern, which may be illustrated by a diamond shape, will have: A) a large number of sentences B) spatial content C) a chronological...

Customarily, all good paragraphs have a:

Customarily, all good paragraphs have a: A) clincher sentence B) topic sentence C) spatial opening D) introductory paragraph E) summary sentence Answer:...

When the topic sentence is composed of a generalization or premise that is supported by specific information that follows, the paragraph development pattern is referred to as

When the topic sentence is composed of a generalization or premise that is supported by specific information that follows, the paragraph development...

When writing a paragraph on how to make or do something, the development is called

When writing a paragraph on how to make or do something, the development is called a) parallel structure b) spatial c) coherence d) process development...

______ is not a means used to achieve coherence.

______ is not a means used to achieve coherence. a) Parallel structure b) Pronouns c) Transitional expressions d) Digression Answer: ...

One difference between an essay and a technical report is

One difference between an essay and a technical report is a) very few readers will read the complete report b) essays tend to have a greater variety...

When paragraph sentences all relate to the same key idea, the paragraph has

When paragraph sentences all relate to the same key idea, the paragraph has a) unity b) a sound structure c) a parallel structure d) coherence Answer:...

Customarily, all good paragraphs have a ____ sentence.

Customarily, all good paragraphs have a ____ sentence. a) concluding b) key c) chronological d) spatial Answer: ...

Control of the immersion heater boiler is done by turning on and off the ______ supply to one or more elements as required.

Control of the immersion heater boiler is done by turning on and off the ______ supply to one or more elements as required. a) water b) power c)...

The immersion heater boiler has its elements arranged

The immersion heater boiler has its elements arranged a) as isolated units in the steam space b) equally spaced in the steam space c) outside the...

Control of the immersion heater boiler is done by

Control of the immersion heater boiler is done by a) transforming the voltage to a lower value b) turning the power on and off to the elements as...

There are two general designs of electric boilers. They are the

There are two general designs of electric boilers. They are the a) firetube type and water tube type b) AC and DC type c) electrode and immersion...

Immersion boiler tube bundles

Immersion boiler tube bundles a) act to conduct current through the water b) can be easily removed from the unit for maintenance purposes c) cannot...

An immersion electric boiler capacity can be as high as

An immersion electric boiler capacity can be as high as a) 1,500 kW b) 2,100 kW c) 30,000 kW d) 16,000 kW e) 5,000 kW Answer: ...

A __________ is not required on an electrode electric type boiler.

A __________ is not required on an electrode electric type boiler. a) safety valve b) gauge glass c) blow-off valve d) low water cut-off e) pressure...

One disadvantage of an electric boiler is that it

One disadvantage of an electric boiler is that it a) requires alternating current b) requires DC power c) has no chimney d) is not very efficient e)...

The amount of current passed through the water of an electrode boiler depends on

The amount of current passed through the water of an electrode boiler depends on a) the depth of the electrodes in the water b) the control valve...

The steam produced by an electrode type boiler depends on

The steam produced by an electrode type boiler depends on a) the voltage supplied to the elements b) the level of water in the basket c) the number...

The electrode type boiler

The electrode type boiler a) cannot have a varying load b) must operate at very constant pressure c) utilizes bundles of electric elements d) requires...

Electrode boiler capacities can be as high as

Electrode boiler capacities can be as high as a) 16,000 kW b) 30,000 kW c) 1,200 kPa d) 1,200 kW e) 30,000 kPa Answer: ...

Operating voltage for an electrode boiler may be as high as

Operating voltage for an electrode boiler may be as high as a) 30,000 volts b) 16,000 volts c) 5,000 volts d) 550 volts e) 240 volts Answer:...

A boiler which incorporates a basket and a basket drain valve is the

A boiler which incorporates a basket and a basket drain valve is the a) steam generator b) immersion boiler c) Sterling boiler d) electrode boiler e)...

Most electric boilers are limited in pressure to about 2100 kPa due to the effect of high temperature on the

Most electric boilers are limited in pressure to about 2100 kPa due to the effect of high temperature on the a) steam space b) submerged area c) boiler...

An advantage of an electric boiler is that it

An advantage of an electric boiler is that it a) is silent in operation b) can rapidly produce steam c) can produce steam at very high pressures d)...

An advantage of an electric boiler is, that it

An advantage of an electric boiler is, that it a) has a high steaming rate b) can be operated at high pressures and temperatures c) produces very...

A main disadvantage of an electric boiler is

A main disadvantage of an electric boiler is a) they are not very compact b) furnace refractory tends to be high maintenance item c) vibration requires...

Electric boilers

Electric boilers a) require tall stacks for pollution dispersal b) tend not to be very compact c) require sootblowers when fuel is coal d) have energy...

The quick opening blow-off valve should be placed

The quick opening blow-off valve should be placed a) at the second blowdown tank b) second from the boiler c) furthest from the boiler d) between...

The blow down system has two valves; they should be opened and closed in the correct sequence to

The blow down system has two valves; they should be opened and closed in the correct sequence to a) carry out the blow down accurately b) prevent...

A boiler blow down system is equipped with slow and fast opening valves. The quick opening valve is placed

A boiler blow down system is equipped with slow and fast opening valves. The quick opening valve is placed a) closest to the boiler and opened first b)...

The preferred arrangement of valves on a boiler blow-off line is

The preferred arrangement of valves on a boiler blow-off line is a) two quick-opening valves b) a slow-opening valve closest to the boiler followed...

When two seatless valves are used for intermittent blowdown, the operation sequence is

When two seatless valves are used for intermittent blowdown, the operation sequence is a) open the downstream valve first and close it last b) open...

Water leaving a blowdown tank and entering a sewer must not exceed

Water leaving a blowdown tank and entering a sewer must not exceed a) 45 degrees C b) 50 degrees C c) 75 degrees C d) 65 degrees C e) 80 degrees...

A blowdown tank will

A blowdown tank will a) have to be cleaned monthly to remove the collected sludge b) not be classed as a pressure vessel since it is vented c) lower...

Boiler water having the greatest concentration of suspended solids is found

Boiler water having the greatest concentration of suspended solids is found a) just below the steam drum water line b) in the bottom of the mud drum c)...

A blow off tank is used to

A blow off tank is used to a) lower the dissolved solids in the water b) lower the pH of the water c) prevent damage to the sewer d) keep the condensate...

According to the Alberta Boilers Act Regulations, what fitting is needed between the blow-off valve and the boiler if two boilers use the same blow-off tank?

According to the Alberta Boilers Act Regulations, what fitting is needed between the blow-off valve and the boiler if two boilers use the same blow-off...

According to the CSA B-51 code a blow-off tank is necessary to

According to the CSA B-51 code a blow-off tank is necessary to a) prevent high temperature and pressure in the sewer b) prevent blowing off too quickly c)...

A "rule of thumb" rate of continuous blowdown is approximately

A "rule of thumb" rate of continuous blowdown is approximately a) 10% of steaming rate b) 5% of steaming rate c) 15% of steaming rate d) 1% of steaming...

Boiler water having the highest Total Dissolved Solids (TDS) content is found

Boiler water having the highest Total Dissolved Solids (TDS) content is found a) at the bottom of the mud drum b) at the bottom of the steam drum c)...

If dissolved solids are not removed from boiler water the result may be

If dissolved solids are not removed from boiler water the result may be a) overheating of convection zone tubes b) foaming and carry-over c) overheating...

The continuous boiler water blowdown is used

The continuous boiler water blowdown is used a) in place of the main blowdown b) in addition to the main blowdown c) to adjust the drum water level d)...

A steam boiler is blown down in order to

A steam boiler is blown down in order to a) clean the soot and carbon out of the firebox and tubes b) lower the operating water level in the boiler c)...

Blowdown guidelines can be found in

Blowdown guidelines can be found in a) ASME Section VII b) ASME Section VIII c) CSA B51 d) CSA B52 e) applicable provincial Acts and Regulations Answer:...

An external treatment method which minimizes blowdown is

An external treatment method which minimizes blowdown is a) sodium zeolite softening b) deaeration c) coagulators d) demineralization e) sludge conditioning Answer:...

The type of blowdown system used on a boiler is usually a function of

The type of blowdown system used on a boiler is usually a function of a) the type of internal water treatment used b) the type of external water...

Pressure explosions occur when a pressure part of the boiler such as the shell, furnace, or firetube bursts due to too high a steam pressure or a structural weakening of the metal. This weakening may be caused by:

Pressure explosions occur when a pressure part of the boiler such as the shell, furnace, or firetube bursts due to too high a steam pressure or a structural...

Attempting to light a burner __________ may cause a furnace explosion.

Attempting to light a burner __________ may cause a furnace explosion. a) from hot refractory b) without preheating the fuel c) without first cooling...

Failure to __________ the furnace thoroughly before light-up can cause a furnace explosion.

Failure to __________ the furnace thoroughly before light-up can cause a furnace explosion. a) heat b) drain c) prime d) cool e) purge Answer:...

Poor combustion due to the insufficient amount of ______ may cause a furnace explosion.

Poor combustion due to the insufficient amount of ______ may cause a furnace explosion. a) gas b) fuel c) heat d) air e) hydrocarbons Answer:...

If the main burner fails, this could cause

If the main burner fails, this could cause a) the steam atomizing pressure to increase b) admission of unburned fuel to the furnace which may explode c)...

Attempting to light one burner from another burner during the operation, can

Attempting to light one burner from another burner during the operation, can a) cause the lit burner to be blown out b) cause the fuel oil in the...

One cause of flame failure in oil or gas fired boilers is

One cause of flame failure in oil or gas fired boilers is a) excessive fuel temperature b) fuel pressure being too high c) the fuel being too volatile d)...

The purging process for a furnace should be done

The purging process for a furnace should be done a) before each burner is lit b) with the fuel valve closed c) with the fuel valve in the open position d)...

When additional gas burners are required, they may be ignited

When additional gas burners are required, they may be ignited a) from an adjacent burner b) by the flame detector c) by means of a transformer relay d)...

Most furnace explosions occur

Most furnace explosions occur a) during the lighting up of a boiler burner b) during the shutting down of a burner c) during the purge period of lighting...

The best method of ensuring adequate attention is being given to the boiler and its controlling and safety devices is to

The best method of ensuring adequate attention is being given to the boiler and its controlling and safety devices is to a) schedule regular testing...

A reason for many boiler accidents may be due to

A reason for many boiler accidents may be due to a) inadequate training of operating personnel b) log books being kept up to date and adequate c)...

A boiler pressure or waterside explosion

A boiler pressure or waterside explosion a) could be the result of water in the fuel oil b) could be the result of inadequate ignition c) may be...

A firetube boiler furnace explosion

A firetube boiler furnace explosion a) can be the result of too much scale on boiler tubes b) is more disastrous than a pressure or waterside explosion c)...

What causes the level in the gauge glass to be lower than the water level in the boiler?

What causes the level in the gauge glass to be lower than the water level in the boiler? a) steam valve on the gauge glass closed b) shrinkage in...

What causes the level in the gage glass to be higher than in the drum?

What causes the level in the gage glass to be higher than in the drum? a) column drain valve leaking b) steam valve on the gage glass closed c) swell...

If the boiler safety valves open during boiler operation, you should

If the boiler safety valves open during boiler operation, you should a) close the non-return valve on the boiler drum b) shut the boiler down immediately c)...

If the safety valve on a boiler pops and the only pressure gauge indicates well below pop pressure, you would

If the safety valve on a boiler pops and the only pressure gauge indicates well below pop pressure, you would a) notify the Boiler Inspector b) reduce...

When you first notice that the water level in the boiler gauge glass can no longer be seen, it is best first to

When you first notice that the water level in the boiler gauge glass can no longer be seen, it is best first to a) ensure that the boiler is not...

In the event of a flame failure, an automatic boiler will close the fuel valve and usually

In the event of a flame failure, an automatic boiler will close the fuel valve and usually a) begin a re-start cycle immediately b) perform a post-purge c)...

A high water level in a boiler

A high water level in a boiler a) will not be made worse by dropping boiler pressure or allowing "swell" to occur b) should cause a high water level...

In the event of a low water condition in a boiler the engineer in charge should

In the event of a low water condition in a boiler the engineer in charge should a) shut down the burner immediately b) continue firing and restore...

While blowing down a boiler which is in operation, you should

While blowing down a boiler which is in operation, you should a) check the rest of the boiler room equipment b) fill in the log book for your shift c)...

When performing a sootblowing operation it is important to maintain flame stability and

When performing a sootblowing operation it is important to maintain flame stability and a) ensure drum water level remains constant b) firing rate...

A natural gas fired power boiler flame should be

A natural gas fired power boiler flame should be a) very slow, long, and mostly yellow or orange b) fairly rapid, mostly blue, and some orange c)...

A wide and rapid fluctuating water level in the boiler gage glass may be the result of

A wide and rapid fluctuating water level in the boiler gage glass may be the result of a) high TDS b) a vapour bound boiler feed pump c) low alkalinity d)...

Soot and ash are undesirable on tube surfaces because they

Soot and ash are undesirable on tube surfaces because they a) increase heat transfer through the heating surfaces b) cause overheating of the tubes c)...

Shot cleaning pellets are transported to the top of the boiler

Shot cleaning pellets are transported to the top of the boiler a) by using an air stream b) manually c) in a steam injection system d) by a hydraulic...

Shot cleaning pellets have a diameter of approximately

Shot cleaning pellets have a diameter of approximately a) 2 cm b) 6 cm c) 0.6 cm d) 0.6 mm e) 2 mm Answer: ...

A stationary sootblower

A stationary sootblower a) has two opposing nozzles at the end of its lance b) has a row of nozzles throughout the lance length c) does not rotate...

While a steam sootblower is in operation it is cooled by

While a steam sootblower is in operation it is cooled by a) air b) flue gases c) steam d) water e) none of the above Answer: ...

During a sootblowing operation the boiler firing rate should be at least

During a sootblowing operation the boiler firing rate should be at least a) 15% b) 30% c) 20% d) 80% e) 70% Answer: ...

A long retractable sootblower will

A long retractable sootblower will a) have nozzles throughout its full length b) be used to clean furnace walls c) blow during extension and retraction...

A furnace wall sootblower sequence of operation is

A furnace wall sootblower sequence of operation is a) rotate & blow, extend, retract b) extend, blow, retract, rotate c) rotate, extend, blow,...

The steam used for sootblowing is usually

The steam used for sootblowing is usually a) greater than boiler drum pressure b) wet unsaturated steam c) the same as boiler drum pressure d) superheated...

In addition to reducing heat transfer, soot and ash on fireside tubes also

In addition to reducing heat transfer, soot and ash on fireside tubes also a) lessens the chance of furnace explosions b) increases draft fan power c)...

The chemical injection line is located

The chemical injection line is located a) near the normal water level b) close to the CBD line c) in the steam space d) near the internal feed pipe e)...

Chemicals are injected into the boiler to

Chemicals are injected into the boiler to a) prevent corrosion b) keep sludge dispersed c) prevent sludge d) prevent scale e) all the above Answer:...

Some smaller boilers have a pipe and baffle device in the steam drum which acts as

Some smaller boilers have a pipe and baffle device in the steam drum which acts as a) a separator b) a chemical injection device c) a scrubber d)...

A drum internal which acts to reduce thermal shock and turbulence is the

A drum internal which acts to reduce thermal shock and turbulence is the a) cyclone separator b) drip-collector baffle c) corrugated plate drier d)...

The CBD valve is usually a

The CBD valve is usually a a) gate valve with a metering device b) ball valve with a metering device c) stop/check valve with a metering device d)...

Relative to steam drum internals, a boiler water test is conducted to

Relative to steam drum internals, a boiler water test is conducted to a) ensure scrubbers have not corroded away b) adjust or set the continuous blowdown...

Cyclone separators are used to

Cyclone separators are used to a) separate water droplets from the steam b) accelerate the steam leaving the boiler c) heat the steam coming out of...

Steam separation in a modern boiler usually occurs in

Steam separation in a modern boiler usually occurs in a) 1 step b) 2 steps c) 3 steps d) 4 steps e) 5 steps Answer: ...

At lower pressures, steam

At lower pressures, steam a) has higher densities b) is more difficult to separate from the water c) readily rises and separates from the water d)...

A boiler steam drum will

A boiler steam drum will a) allow load increases to be accomplished more quickly b) always be the highest component of a boiler c) not distribute...

The component of a boiler which allows a space for the introduction of chemicals is the

The component of a boiler which allows a space for the introduction of chemicals is the a) mud drum b) steam drum c) injection tank d) internal feed...

The advantages of a packaged boiler are:

The advantages of a packaged boiler are: 1. lower freight costs because of less handling 2. lower initial cost because they are mass produced 3....

When the hot combustion gases travel through boiler tubes which are surrounded by the boiler water, the boiler is called a

When the hot combustion gases travel through boiler tubes which are surrounded by the boiler water, the boiler is called a a) watertube boiler b)...

A firetube boiler is one which has

A firetube boiler is one which has a) water on the inside of the tubes and the hot gas of combustion on the outside. b) the furnace as the first pass...

A boiler which is built ready for installation is the

A boiler which is built ready for installation is the a) Scotch marine boiler b) firebox boiler c) HRT boiler d) packaged boiler e) locomotive boiler Answer:...

In a packaged firetube boiler the flue gas velocity within the unit is maintained by

In a packaged firetube boiler the flue gas velocity within the unit is maintained by a) increasing forced draft fan speed b) constructing a taller...

The wetback Scotch boiler was designed primarily for

The wetback Scotch boiler was designed primarily for a) building heating service b) marine service c) traction engine service d) railway service e)...

A corrugated furnace will give required strength with thinner metal, increase heating surface, and

A corrugated furnace will give required strength with thinner metal, increase heating surface, and a) increase the boiler mass b) add to the overall...

The firebox boiler is a __________ pass firetube boiler.

The firebox boiler is a __________ pass firetube boiler. a) single b) two c) three d) vertical e) horizontal Answer: ...

A major disadvantage of a firebox is

A major disadvantage of a firebox is a) first cost is relatively high b) it has a low heat transfer efficiency c) it is not very compact d) cleaning...

A boiler which utilized a water leg and was primarily used for heating purposes was the

A boiler which utilized a water leg and was primarily used for heating purposes was the a) HRT boiler b) locomotive boiler c) firebox boiler d) Scotch...

A component used to increase the volume of the steam space in a locomotive boiler was the

A component used to increase the volume of the steam space in a locomotive boiler was the a) crown sheet b) steam leg c) shell head d) dry pipe e)...

An advantage of a locomotive boiler over other boilers of the era was

An advantage of a locomotive boiler over other boilers of the era was a) rugged construction b) better cleaning and repair access c) improved water...

With regard to a steam boiler, the lettering "HRT" means

With regard to a steam boiler, the lettering "HRT" means a) highly regulated temperature b) hot return tubes c) horizontal return tubular d) highly...

A device used to prevent the carry-over of moisture with the steam of an HRT boiler is the

A device used to prevent the carry-over of moisture with the steam of an HRT boiler is the a) internal pipe b) dry pipe c) nozzle d) head pipe e)...

HRT boiler firetubes have a diameter range of

HRT boiler firetubes have a diameter range of a) 25 to 51 mm b) 51 to 102 mm c) 76 to 102 mm d) 102 to 137 mm e) 125 to 176 mm Answer:...

In the phosphate test, what reagent is used?

In the phosphate test, what reagent is used? A. Molybdate B. Stannous C. Potassium-iodide-iodate D. A and C E. A and B Answer:...

In the sodium sulphite test, ___ is added drop by drop until a permanent light blue color is attained.

In the sodium sulphite test, ___ is added drop by drop until a permanent light blue color is attained. A. Starch B. Potassium-iodide-iodate C. Molybdate...

Which test uses a device with two electrodes that are immersed in the sample and a voltage is supplied to the electrodes by a means of a battery.

Which test uses a device with two electrodes that are immersed in the sample and a voltage is supplied to the electrodes by a means of a battery. A....

Which test measures the ability of the water to conduct an electric current?

Which test measures the ability of the water to conduct an electric current? A. Methyl orange test B. pH testing C. Sodium sulphite test D. Phosphate...

In the methyl orange test, if a yellow color is produced then this means that the sample is still alkaline due to __ present.

In the methyl orange test, if a yellow color is produced then this means that the sample is still alkaline due to __ present. A. Bicarbonates B. Hydroxides C....

In the phenolphthalein test __ is added drop by drop to the water until the pink color disappears.

In the phenolphthalein test __ is added drop by drop to the water until the pink color disappears. A. Bicarbonates B. Hydroxides C. Sulphuric acid D....

The titration test has an accuracy of 10% if the ppm is lower than __ppm.

The titration test has an accuracy of 10% if the ppm is lower than __ppm. A. 10 B. 5 C. 15 D. 17 E. 8 Answer:...

The titration test has an accuracy of 2% if the ppm is between ppm to ppm.

The titration test has an accuracy of 2% if the ppm is between __ppm to __ppm. A. 2 to 1000 B. 3 to 1100 C. 4 to 1300 D. 5 to 1200 E. 6 to 1500 Answer:...

Sample line is connected to?

Sample line is connected to? A. Boiler drum B. Feedwater line C. Continuous blowdown line D. Chemical line E. Blowdown tank Answer:...

Sample water passes through a cooler where its temperature is reduced to about __C.

Sample water passes through a cooler where its temperature is reduced to about __C. A. 32 B. 24 C. 15 D. 9 E. 28 Answer:...

Corrosion of return lines is caused by?

Corrosion of return lines is caused by? A. Sodium hydroxide and sodium carbonate B. Sodium phosphate and Sodium sulphite C. Bicarbonates and phosphates D....

Chemical that prevent caustic embrittlement is?

Chemical that prevent caustic embrittlement is? A. Sodium nitrate B. Lignins C. Tannins D. All of the above Answer:...

Disadvantage of sodium hydroxide is?

Disadvantage of sodium hydroxide is? A. Causes caustic embrittlement of the boiler metal B. Causes forming C. Poor for pH control D. All of the above E....

Hydrazine chemical formula?

Hydrazine chemical formula? A. NH2 B. N2H3 C. N2H4 D. N3H3 E. N4H4 Answer:...

Chemicals used for scale prevention are?

Chemicals used for scale prevention are? A. Tannin B. Sodium aluminate C. Lignin D. All of the above E. A and C Answer:...

Chemicals used for sludge conditioning are?

Chemicals used for sludge conditioning are? A. Sodium carbonate B. Sodium hydroxide C. Alginates D. All of the above E. A and B Answer:...

Chemicals are sold by:

Chemicals are sold by: A. Generic names B. Trade names C. Numbers D. All of the above E. B and C Answer: ...

Caustic acid is?

Caustic acid is? A. Sodium hydroxide B. Sodium sulphite C. Sodium chromate D. Sodium carbonate E. Sodium phosphate Answer:...

Soda ash is?

Soda ash is? A. Sodium hydroxide B. Sodium sulphite C. Sodium chromate D. Sodium carbonate E. Sodium phosphate Answer:...

Low pressure hot water boilers require:

Low pressure hot water boilers require: A. Proper pH control B. Extensive internal water treatment C. Corrosion prevention D. All of the above E....

A continuous blow-off is

A continuous blow-off is a) used to reduce the dissolved gases in the boiler b) installed in the steam drum c) used on every boiler d) installed in...

When performing a water test be sure that:

When performing a water test be sure that: 1. all equipment is clean and in good working order 2. results are recorded carefully before making the...

Boiler water chemicals are injected

Boiler water chemicals are injected a) in measured amounts once per year b) after considering the water test readings c) into the water softener d)...

The phenolphthalein or "P" alkalinity test does not indicate alkalinity due to

The phenolphthalein or "P" alkalinity test does not indicate alkalinity due to a) hydroxides b) bicarbonates c) sulphates d) carbonates e) phosphates Answer:...

One element which leads to caustic embrittlement in boiler tubes is

One element which leads to caustic embrittlement in boiler tubes is a) concentration of sodium hydroxide b) concentration of sodium chloride c) overheating...

To prevent scale formation, inject

To prevent scale formation, inject a) zeolite b) sodium chloride c) phenolphthalein d) amines e) phosphates Answer:...

The boiler blowoff should be used to

The boiler blowoff should be used to a) reduce steam pressure b) reduce feedwater pressure c) control the total dissolved solids d) prevent scale...

Foaming of water in the boiler

Foaming of water in the boiler a) is due to a high concentration of dissolved gases b) can be controlled by adding sodium phosphate c) can be controlled...

Internal water treatment is

Internal water treatment is a) used with low pressure boilers only b) adding chemicals to the boiler water c) adding a coagulant to the settling...

Sludge is usually removed from the boiler by

Sludge is usually removed from the boiler by a) filtering the water before it leaves the boiler b) raking it into a sludge trap c) vacuuming it from...

Excess sulphite is necessary to prevent

Excess sulphite is necessary to prevent a) pitting b) hardness c) carry over d) acidity e) sludging Answer:...

Two common chemicals used for deaeration are Na2SO3 and

Two common chemicals used for deaeration are Na2SO3 and a) NaOH b) H2SO4 c) N2H4 d) Na3PO4 e) Na2(HCO3)2 Answer: ...

Relative to internal treatment, it is customary to:

Relative to internal treatment, it is customary to: a. Use chemicals to precipitate dissolved solids b. Prevent dissolved solids from leaving the...

Phenolphthalein:

Phenolphthalein: a. Turns pink in the presence of an alkali b. Is put in natural gas to give it an odor c. Is fed to cast iron boilers d. Prevents...

To prevent scale formation, ________ is injected into the boiler water.

To prevent scale formation, ________ is injected into the boiler water. a. Zeolite b. Sodium chloride c. Phenolphthalein d. Amine e. Phosphate Answer:...

When testing the total dissolved solids of a water sample, the highly conductive impurity that must first be neutralized is:

When testing the total dissolved solids of a water sample, the highly conductive impurity that must first be neutralized is: a. Sodium phosphate b....

Titration, when testing boiler water, is done with:

Titration, when testing boiler water, is done with: a. A conductivity tester b. Phenolphthalein c. An indicator d. Trisodium phosphate e. A reagent Answer:...

The water in a boiler should be kept:

The water in a boiler should be kept: a. Moderately alkaline b. Neutral c. Mildly acidic d. Aerated when the boiler is not in service e. Turbid Answer:...

Sodium phosphates:

Sodium phosphates: a. Put a light protective scale on the heating surfaces b. Prevent scale formation and keep the boiler water alkaline and non-corrosive c....

A conductivity meter is used to measure the:

A conductivity meter is used to measure the: a. Current b. Alkalinity c. Electrolyte d. Voltage e. Total Dissolved Solids Answer:...

When testing boiler water, a conductivity meter is used to measure:

When testing boiler water, a conductivity meter is used to measure: a. Total alkalinity b. Hydroxide alkalinity c. Hardness in parts per million or...

Carbon dioxide may cause corrosion in condensate return lines. This corrosive carbon dioxide may originate:

Carbon dioxide may cause corrosion in condensate return lines. This corrosive carbon dioxide may originate: a. by absorption in the deaerator b....

Chemicals are fed to a watertube boiler:

Chemicals are fed to a watertube boiler: a. With a small centrifugal pump b. Into the top drum only c. With a small positive displacement pump d....

A residual of 20 to 40 ppm of sodium sulphite is maintained in the boiler water to:

A residual of 20 to 40 ppm of sodium sulphite is maintained in the boiler water to: a. Condition the sludge b. Prevent pitting in the steam drum c....

Total alkalinity is measured:

Total alkalinity is measured: a. Using methyl orange indicator and sulfuric acid b. To ensure it doesn't exceed 2500 ppm c. To control the dissolved...

Phenolphthalein is a/an:

Phenolphthalein is a/an: a. Indicator b. Reagent c. Buffer d. Acid softener e. Neutralizing agent Answer:...

In order to maintain good boiler water:

In order to maintain good boiler water: a. Use a good quality filter b. Feed calcium sulfate c. Feed magnesium sulfate d. Use a feedwater treatment...

Sludge conditioning in a boiler:

Sludge conditioning in a boiler: a. Is controlled by the continuous blow down b. Prevents pollution from the blowdown water c. Prevents precipitates...

Condensate return line corrosion can be controlled by:

Condensate return line corrosion can be controlled by: a. Feeding sodium bicarbonate to the boiler b. Adding sodium phosphate to the return lines c....

Sodium sulphite:

Sodium sulphite: a. Prevents the corrosion caused by oxygen in boiler water b. Precipitates calcium and magnesium compounds c. Prevents scale adhering...

The methyl orange or "M" alkalinity test indicates the alkalinity that is due to:

The methyl orange or "M" alkalinity test indicates the alkalinity that is due to: a. Carbonates only b. Bicarbonates only c. Hydroxides only d....

When testing boiler water, a conductivity meter is used to measure:

When testing boiler water, a conductivity meter is used to measure: a. Total alkalinity b. Hydroxide alkalinity c. Hardness in parts per million...

The pH of the water inside a boiler:

The pH of the water inside a boiler: a. Is controlled with sodium hydroxide b. Could be controlled with amines c. Cannot be controlled d. Is controlled...

Alkalinity in boiler water may be due to calcium, sodium, or magnesium:

Alkalinity in boiler water may be due to calcium, sodium, or magnesium: a. Hydroxides only b. Carbonates and bicarbonates only c. Bicarbonates only d....

Demineralizer anion exchanger takes acid containing water and exchanges it with?

Demineralizer anion exchanger takes acid containing water and exchanges it with? A. Sodium ions B. Hydroxide ions C. Magnesium ions D. Hydrogen ions E....

Demineralizer salts in the cation exchanger are converted into and .

Demineralizer salts in the cation exchanger are converted into __ and __. A. Sulphuric, hyrdochloric, carbon dioxide, water B. Magnesium, calcium,...

Demineralizer cation exchanger removes calcium, magnesium and __ cations.

Demineralizer cation exchanger removes calcium, magnesium and __ cations. A. Sodium B. Hydrogen C. Sulphur D. Hydrochloric E. Iron Answer:...

Demineralizers cation exchanger takes water containing salts and exchanges it with?

Demineralizers cation exchanger takes water containing salts and exchanges it with? A. Sodium ions B. Hydroxide ions C. Magnesium ions D. Hydrogen...

Sodium chloride is also known as?

Sodium chloride is also known as? A. Polyethylene B. Dacron C. Brine D. Porous E. Anthracite Answer: ...

When the zeolite material has given up all its Na cations, regeneration is done by filling it with a ___ solution.

When the zeolite material has given up all its Na cations, regeneration is done by filling it with a ___ solution. A. Sodium carbonate B. Sodium anions C....

The zeolite is charged with a large amount of ?

The zeolite is charged with a large amount of ? A. Sodium carbonate B. Sodium anions C. Sodium cations D. Sodium bicarbonate E. Sodium sulphate...

Lime-Soda Softeners use ___ to add to the water causing the scale-forming dissolved solids:

Lime-Soda Softeners use ___ to add to the water causing the scale-forming dissolved solids: A. Calcium hydroxide B. Sodium chloride C. Sodium carbonate D....

In a cartridge filter, when the pressure drop between the inlet and outlet reaches a specified maximum valve, the cartridge must be?

In a cartridge filter, when the pressure drop between the inlet and outlet reaches a specified maximum valve, the cartridge must be? A. Backwashed B....

In a tubular filter-aid filter, when the filter starts to clog and requires backwashing, inlet and outlet valves are and the drain valve is .

In a tubular filter-aid filter, when the filter starts to clog and requires backwashing, inlet and outlet valves are __ and the drain valve is __. A....

In a tubular filter-aid filter, cylindrical tubes are covered by socks made of __ filter cloth?

In a tubular filter-aid filter, cylindrical tubes are covered by socks made of __ filter cloth? A. Dacron B. Porous C. Anthracite D. Polyethylene E....

In a pressure filter, any suspended matter in the water will be trapped by ___ material?

In a pressure filter, any suspended matter in the water will be trapped by ___ material? A. Sand B. Anthracite C. Calcite D. Porous E. Gravel Answer:...

Dissolved solids cannot be removed by?

Dissolved solids cannot be removed by? A. Lime-soda softener B. Filters C. Sodium zeolite softener D. Settling tanks E. B and D Answer:...

Bicarbonates and sulphates are undesirable because they will cause?

Bicarbonates and sulphates are undesirable because they will cause? A. Overheating of boiler tubes B. Foaming C. Sludge on boiler surfaces D. Corrosion...

If sulphates of calcium and magnesium are not removed, they will cause?

If sulphates of calcium and magnesium are not removed, they will cause? A. Foaming B. Soft scale C. Hard scale D. All of the above E. A and C Answer:...

If bicarbonates are not removed before the water enters the boiler, they will cause?

If bicarbonates are not removed before the water enters the boiler, they will cause? A. Foaming B. Soft scale C. Hard scale D. All of the above E....

Coagulants added to water

Coagulants added to water a) make the water soft b) will remove fine particles more readily c) remove the dissolved solids d) causes the fine particles...

Filters are used

Filters are used a) for external water treatment b) to remove dissolved solids c) to remove calcium bicarbonates d) for internal treatment e) to remove...

The capacity of a sodium zeolite softener will drop due to zeolite attrition at about

The capacity of a sodium zeolite softener will drop due to zeolite attrition at about a) 5% per year b) 3% per year c) 15% per year d) 1% per year e)...

Zeolite of a sodium zeolite softener may be discharged to the sewer during the

Zeolite of a sodium zeolite softener may be discharged to the sewer during the a) injection stage of a regeneration b) service stage c) slow rinse...

The regenerant used to regenerate a cation demineralizer is

The regenerant used to regenerate a cation demineralizer is a) hydrochloric acid b) sodium chloride c) caustic soda d) sodium hydroxide e) sulphuric...

The chemical equation which represents the modification of bicarbonates in hard water by the use of a zeolite softener is

The chemical equation which represents the modification of bicarbonates in hard water by the use of a zeolite softener is a) Ca(HCO3)2 + Na2Z = CaZ...