What happens first when there is a call-for-heat signal to a furnace equipped with a motor-driven vent
damper?
a. The burners light to warm a bi-metal element.
b. A switch in the damper closes to start the burner.
c. A motor opens the vent damper.
d. The burners light to start the motor.
c
Trades & Technology
You might also like to view...
Shellac is the safest of all the clear finishes
Indicate whether the statement is true or false.
Trades & Technology
If the voltage at the emitter of an npn bipolar transistor is 5 V and the transistor is in saturation, the voltage at the collector is approximately
A. 5.0 V B. 5.7 V C. 4.3 V D. 4.8 V E. 5.2 V
Trades & Technology
Discuss and compare the advantages and disadvantages of electric and pneumatic tools.
What will be an ideal response?
Trades & Technology
The differential pressure meter can be used to measure the flow rate of a liquid, but not a gas.
Answer the following statement true (T) or false (F)
Trades & Technology