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Examination Number
00603400
ELECTRIC HEATING
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Questions 1 to 20: Select the best answer to each question.
1. Which of the following types of heaters uses a special glass sheet with a
metallic backing that serves as a heating element?
A. Vertical discharge unit heater
B. Solar panel-skylight
C. Radiant-glass wall-mounted panel heater
D. Ceiling-mounted cable radiant heater
2. What is the TD for an outdoor design temperature of 20 degrees F and an
indoor design temperature of 75 degrees F?
A. 35
B. 45
C. 55
D. 95
3. Which of the following is not a type of heat loss from a building?
A. Radiation
B. Convection
C. Circulation
D. Conduction
4. A circuit with a resistance of 25 ohms is carrying a current of 2 A. How much
heat, in watts, is developed?
A. 50
B. 100
C. 450
D. 1250
5. Using the degree day method, calculate the annual kWh use in Springfield,
Illinois, with a heat loss of 12 kW, and an indoor design temperature of 70
degrees F, and assuming 24-hour per day occupancy.
A. 18,810

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B. 23,512
C. 25,080
D. 34,466
6. What is not a factor that reduces the required number of kWh for heating?
A. Higher lighting levels
B. Greater use of electric equipment
C. Greater number of people occupying building
D. Greater ventilation
7. Heating units that depend upon the natural circulation of air in the space to
be heated are called
A. unit ventilators.
B. heat pumps.
C. electric baseboard heaters.
D. hot-water storage heaters.
8. Balance point temperature is the
A. temperature at which point ventilation is not required.
B. temperature at which cooling is required.
C. outside temperature at which point heat loss from the building equals
internal heat gain.
D. temperature at which point back-up heat comes on.
9. A very good insulator has an R value of 29. The material's heat transfer
coefficient is.
A. 0.034
B. 8.497
C. 14.5
D. 29
10. Of the following, what is true of radiant heat?
A. Lower temperature settings can be used with the same comfort level.
B. A normal thermostat can be used.
C. It is no longer considered a safe heating system.
D. It can only be used as a central system.
11. The best place to locate a thermostat is on an
A. outside wall near a window.
B. inside wall near an outside door.

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