Why do some gas furnaces NOT require an electrical power supply?
A) They are ignited and extinguished manually with no thermostatic control.
B) No gas furnaces require electricity; they operate on gas.
C) The gas valve is operated with the voltage generated by the thermopile safety.
D) Once lighted, they never shut off.
C
Trades & Technology
You might also like to view...
As a battery discharges:
A. Sulfuric acid joins with lead B. Oxygen separates from hydrogen C. The electrolyte contains very little oxygen D. None of the above
Trades & Technology
Relays and contactors operate on the ____________________ principle.
Fill in the blank(s) with the appropriate word(s).
Trades & Technology
What is a symbiotic relationship?
What will be an ideal response?
Trades & Technology
The current waveform in Fig. 6.80 flows through a 3-H inductor. Sketch the voltage across the inductor over the interval 0 < t < 6 s.
 FIGURE 1.png)
Trades & Technology