What is the purpose of an aquastat?
What will be an ideal response?
Aquastat controls are used for hot water oil fired furnaces. They maintain the furnace water at the proper temperature. There is a high limit setting and a low limit setting. The high limit will shut off the burner at a preset temperature.
When the water temperature reaches the low limit, the burner will start up again so that the water temperature does not drop too low.
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Explain why a reduction in base load in a home’s power use will have a more significant impact on power costs than a similar-sized reduction in peak demand.
What will be an ideal response?
Nondestructive examination (NDE) methods are any tests that are used to test equipment and components
_____. a. using chemicals b. without damaging them c. while causing only minor damage d. without touching them
If the true power is 100 W and the reactive power is 100 VAR, the apparent power is ________
A) 200 VA B) 141 W C) 141 VA D) 100 VA
Technician "A" says that a multi-evaporator system equipped with three evaporators (one high temperature, one medium temperature, and one low temperature) will use one evaporator pressure regulator and two flow check valves. Technician "B" says that the crankcase pressure regulator prevents the compressor from overloading on start-up. Which of the following statements is correct?
A. Technician "A" is correct. Technician "B" is correct. B. Technician "A" is correct. Technician "B" is incorrect. C. Technician "A" is incorrect. Technician "B" is correct. D. Technician "A" is incorrect. Technician "B" is incorrect.