1. Which of the given types of heaters employs a special glass sheet with a metallic backing which 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, find out 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
B. 23,512
C. 25,080
D. 34,466