The resistance wire used in electric heating elements is usually _________.
A. copper
B. nickel steel
C. nickel chromium
D. aluminum - Correct Answer C
Radiant heat is transferred by _______.
A. ultraviolet rays
B. infrared rays
C. ionization
D. refraction - Correct Answer B
Quartz and glass panel electric units are classified as ________.
A. natural-convection heaters
B. forced-convection heaters
C. forced-draft conductors
D. radiant heaters - Correct Answer D
The benefits of electric baseboard heating are that ________.
A. each room can be controlled individually
B. they are inexpensive to install
C. they operate on a 24-V power supply
,D. Both a and b - Correct Answer D
Electric baseboard heaters are classified as _______.
A. natural-convection heaters
B. forced-convection heaters
C. forced-draft conductors
D. radiant heaters - Correct Answer A
Any unit heater designed to have air forced across the element should not be operated without the
________ operating.
A. fuse
B. interlock
C. element
D. fan - Correct Answer D
An electric heating unit that utilizes ductwork to distribute the heated air is classified as a _________.
A. natural-convection heater
B. forced-convection heater
C. forced-draft conductor
D. radiant heater - Correct Answer B
The limit switch is used on the electric element assembly to __________.
A. start the unit if the thermostat malfunctions
B. ensure that the fan stops when the unit cools down
C. start the unit prematurely on a cold day
, D. shuts off the unit if high temperature occurs - Correct Answer D
Which of the following elements is not a power-consuming device?
A. The sequencer heater coil
B. A magnetic solenoid that moves the armature in a contactor
C. The contacts of a contactor
D. The blower motor - Correct Answer C
A 10 Kw heating element, operating on rated 240 V, will generate _________ Btu/h
A. 29,319
B. 31,062
C. 34,130
D. 35,875 - Correct Answer C
Some units may be designed to move enough air across the heating elements so that they do not glow.
True or False - Correct Answer True
One potential safety hazard that all technicians should be aware of when working on an electrical
furnace is that there are many exposed electrical connections behind the inspection panels
True or False - Correct Answer True
Electric heating units provide almost instant heat. Therefore, anticipators are not needed in electrical
heat thermostats
True or False - Correct Answer False
A. copper
B. nickel steel
C. nickel chromium
D. aluminum - Correct Answer C
Radiant heat is transferred by _______.
A. ultraviolet rays
B. infrared rays
C. ionization
D. refraction - Correct Answer B
Quartz and glass panel electric units are classified as ________.
A. natural-convection heaters
B. forced-convection heaters
C. forced-draft conductors
D. radiant heaters - Correct Answer D
The benefits of electric baseboard heating are that ________.
A. each room can be controlled individually
B. they are inexpensive to install
C. they operate on a 24-V power supply
,D. Both a and b - Correct Answer D
Electric baseboard heaters are classified as _______.
A. natural-convection heaters
B. forced-convection heaters
C. forced-draft conductors
D. radiant heaters - Correct Answer A
Any unit heater designed to have air forced across the element should not be operated without the
________ operating.
A. fuse
B. interlock
C. element
D. fan - Correct Answer D
An electric heating unit that utilizes ductwork to distribute the heated air is classified as a _________.
A. natural-convection heater
B. forced-convection heater
C. forced-draft conductor
D. radiant heater - Correct Answer B
The limit switch is used on the electric element assembly to __________.
A. start the unit if the thermostat malfunctions
B. ensure that the fan stops when the unit cools down
C. start the unit prematurely on a cold day
, D. shuts off the unit if high temperature occurs - Correct Answer D
Which of the following elements is not a power-consuming device?
A. The sequencer heater coil
B. A magnetic solenoid that moves the armature in a contactor
C. The contacts of a contactor
D. The blower motor - Correct Answer C
A 10 Kw heating element, operating on rated 240 V, will generate _________ Btu/h
A. 29,319
B. 31,062
C. 34,130
D. 35,875 - Correct Answer C
Some units may be designed to move enough air across the heating elements so that they do not glow.
True or False - Correct Answer True
One potential safety hazard that all technicians should be aware of when working on an electrical
furnace is that there are many exposed electrical connections behind the inspection panels
True or False - Correct Answer True
Electric heating units provide almost instant heat. Therefore, anticipators are not needed in electrical
heat thermostats
True or False - Correct Answer False
