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HVAC UNIT 18 DEFINITIONS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024/25 $11.49   Add to cart
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HVAC UNIT 18 DEFINITIONS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024/25
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HVAC UNIT 18 DEFINITIONS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024/25

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  • November 22, 2024
  • 2
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • FOA CFOT Certification
  • FOA CFOT Certification

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HVAC UNIT 18 DEFINITIONS
Belly-band-mount motor - ANSWER An electric motor mounted with a strap around the motor secured
with brackets on the strap.



Cradle-mount motor - ANSWER A motor with a mounting cradle that fits the motor end housing on each
end and is held down with a bracket.



Delta transformer connection - ANSWER A transformer connection that results in a voltage output of
115V and 230V



Direct-drive motor - ANSWER A motor that is connected directly to the load, such as an oil burner motor
or a furnace fan motor.



Drip-proof motor - ANSWER A motor that can stand water dripping on it, such as a condenser fan motor
in an outdoor condensing unit.



End mount - ANSWER An electric motor mounted with tabs or studs fastened to the motor housing end.



Explosion-proof motor - ANSWER A totally sealed motor and its connections that can be operated in an
explosion atmosphere, such as in a natural gas plant.



Frequency - ANSWER The cycles per second of the electrical current supplied by the power company.
This is normally 60 cps in the United states



Full-load amperage - ANSWER A mathematical calculation used to get Underwriters Laboratories
approval for a motor that was used by compressor manufactures before 1972.



Hertz - ANSWER Cycles per second



Locked-rotor amerperage - ANSWER The current an electric motor draws when power is applied to the
motor, but its rotor is not yet turning. The LRA is normally five time the rated-load amperage.

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