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LM12345 LM12345
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6 years ago
How warm is the supply air of an electric furnace compared to gas or oil fired furnaces?
 
  A) Supply air temperatures for electric furnaces are higher
  B) Supply air temperatures for electric furnaces are lower than oil furnaces, but higher than gas furnaces
  C) Supply air temperatures are about the same
  D) Supply air temperatures for electric furnaces are lower

 Q. 2

As voltage increases, current decreases.
 
  Indicate whether the statement is true or false

 Q. 3

What is the kilowatt rating of an electric furnace rated at 240 volts and 30 amps?
 
  A) 240 V  30 A = 600 W, which is 60 kW
  B) 240 V  30 A = 80 W, which is 8 kW
  C) 240 V  30 A = 7,200 W, which is 72kW
  D) kilowatts cannot be calculated using only volts and amps
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ScarletSkyScarletSky
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6 years ago
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LM12345 Author
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#2
6 years ago
Great answers, all of them were right
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