How is mineral insulated (MI) heating cable used?
A) In standard electric cords
B) To supply the power wiring to all types of electric heaters
C) To make the heating elements in baseboard electric heaters
D) Embedded in concrete for electric radiant floor heating
[Ques. 2] How do gas furnaces ensure the production of a blue flame?
A) The use of a manifold only B) The use of gas spuds and a manifold
C) The use of atmospheric combustion D) The use of gas spuds only
[Ques. 3] What is the theoretical evaporation rate?
A) 1 percent of the water supplied for every 10F of cooling
B) 0.5 percent of the water supplied for every 1F of cooling
C) 5 percent of the water supplied for every 10F of cooling
D) 5 percent of the water supplied for every 15F of cooling
[Ques. 4] Why would you use supply registers with curved louvers?
A) The system operates more efficiently. B) The system has higher airflow.
C) The air disperses throughout the room. D) The occupants feel less of a draft.
[Ques. 5] What is the most frequently used type of electric space heater for residential and commercial buildings?
A) Convection baseboard electrical heaters B) Suspended forced air heaters
C) Infrared electric heaters D) Cabinet-style electric heaters
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