Chapter 103 Flashcards
0
Q
Infrared heaters are usually mounted: A) overhead B) on walls C) in floors D) under windows
A
A) overhead
1
Q
The burning flame in a directly fired refractory heater heats the surface temperature to a maximum of \_\_\_\_\_\_*C. A) 1000 B) 1260 C) 1500 D) 1750
A
B) 1260
2
Q
A low temperature catalytic heater contains a layer of:
A) metal impregnated with a catalyst
B) wool fibre impregnated with a catalyst
C) plastic fibre impregnated with a catalyst
D) glass wool impregnated with a catalyst
A
D) glass wool impregnated with a catalyst
3
Q
The main disadvantage of electric heating is the: A) high maintenance cost B) poor local temperature control C) expensive installation D) high operating cost
A
D) high operating cost
4
Q
The most common material used for electric heating elements is \_\_\_\_\_\_ resistance wire. A) nickel metal hydride B) copper C) tungsten D) nickel chromium
A
D) nickel chromium
