UNIT 61 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX
61-1) List three advantages of a warm air electric furnace as compared to an oil or gas
furnace.
61-2) What material are electric heater coils often made from?
61-3) An electric furnace rated at 240 volts and 30 amps would have an output
capacity of how many kW?
61-4) What happens to the current draw as an electric heating element warms up?
61-5) When would the blower come on in an electric furnace?
61-6) Why is nickel chrome alloy used for electric furnace heating elements?
61-7) How are electric heating elements rated?
61-8) How would a multistage thermostat operate for a heat pump system with
supplemental electric heat?
61-9) How do air temperatures compare between electric furnaces and those that are
gas or oil fired?
61-10) What is the function of a high limit switch on an electric heater?
61-11) What is a fusible link on an electric heater?
61-12) How does an overload protection device on an electric heater differ from a
fusible link?
61-13) What happens when the spring clips holding an inline cartridge fuse become
loose?
61-14) What are the requirements for replacement wiring in an electric furnace?
61-15) What is a term used for a furnace that heats hot water which is then circulated
61-16) What is an advantage of an electric baseboard heater?
61-17) In what locations should electric baseboard heaters be installed?
61-18) What precaution should be taken when locating an electric baseboard heater
61-19) How can an electric baseboard heater be cleaned?
61-20) Why are hydronic furnaces popular in geographical areas that do not require air
conditioning?