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 type
d) grounded and ungrounded type
e) reverse polarity and negative ground
Answer: C
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Electric Boilers
- Control of the immersion heater boiler is done by turning on and off the ______ supply to one or more elements as required.
- The immersion heater boiler has its elements arranged
- Control of the immersion heater boiler is done by
- Immersion boiler tube bundles
- An immersion electric boiler capacity can be as high as
- A __________ is not required on an electrode electric type boiler.
- One disadvantage of an electric boiler is that it
- The amount of current passed through the water of an electrode boiler depends on
- The steam produced by an electrode type boiler depends on
- The electrode type boiler
- Electrode boiler capacities can be as high as
- Operating voltage for an electrode boiler may be as high as
- A boiler which incorporates a basket and a basket drain valve is the
- Most electric boilers are limited in pressure to about 2100 kPa due to the effect of high temperature on the
- An advantage of an electric boiler is that it
- An advantage of an electric boiler is, that it
- A main disadvantage of an electric boiler is
- Electric boilers