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 required
c) a float switch
d) increasing and decreasing water flow
e) recirculating boiler water
Answer: B
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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
- There are two general designs of electric boilers. They are the
- 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