HVAC 102 BASIC ELECTRICITY FINAL EXAM
Latest Update 2024-2025 Actual Exam from
Credible Sources with 50 Questions and Verified
Correct Answers Golden Ticket to Guaranteed
A+ Verified by Professor
. If a run capacitor goes bad on a PSC (permanent split capacitor) motor _______. -
CORRECT ANSWER: D. All of the above - It will run slowly ; inefficiently / run
backwards / overload
1. Which can replace a 220 volt 20 MFD capacitor - CORRECT ANSWER: D. None of
the above (All options don't make sense) (microfarads can't differ from replacement?)
2. When hooking up a transformer that has multiple primary leads for different voltages
the unused leads would be ________. - CORRECT ANSWER: capped off with wire buts
individually. Preventing shorts
3. If a circuit breaker or fuse trips immediately upon power, most likely________ -
CORRECT ANSWER: direct short to ground
4. When replacing a half horse motor with another half horse motor _________ -
CORRECT ANSWER: check the amp draw and speed of the motor
6. The reason for having a resistor solder to a start capacitor terminal is so _________ -
CORRECT ANSWER: It will bleed off the wattage and keep the motor from workin too
hard
7. The purpose of a megohmmeter is to________. - CORRECT ANSWER: can help to
find places in the windings where the insulation is getting weak
, A (PSC) permanent split capacitor motor has a blank _________. - CORRECT
ANSWER: run capacitor only
A common practice in condensing units is to use a contactor which only opens one leg
so that ______. - CORRECT ANSWER: provide off cycle heat to the compressor
A current magnetic relay (CMR ) opens and closes it's contacts based on ________. -
CORRECT ANSWER: D. Current in the run winding
A direct drive motor is usually connected to a load with _________. - CORRECT
ANSWER: a coupling
A fuse for a motor circuit has to be different than the type of fuse used for heater
circuits. - CORRECT ANSWER: C. there has to be a time delay because of LRA
A permanent split capacitor (PSC) motor that is running and up to speed will have the
start winding ____. - CORRECT ANSWER: in series with the run winding
A service factor of an electrical motor is determined by ________. - CORRECT
ANSWER: motors reserve capacity
A sleeve bearing would typically be used in a motor that operates with a ________. -
CORRECT ANSWER: a light load where noise is a factor
A split phase motor can use a ______ to energize and de energize The start winding -
CORRECT ANSWER: Centrifugal switch
A split phase motor has a ____ winding and a _____ winding. - CORRECT ANSWER:
Start, run
A split phase motor that has a current relay and a start capacitor is called a _______ -
CORRECT ANSWER: CSIR MOTOR capacitor start induction run motor
Latest Update 2024-2025 Actual Exam from
Credible Sources with 50 Questions and Verified
Correct Answers Golden Ticket to Guaranteed
A+ Verified by Professor
. If a run capacitor goes bad on a PSC (permanent split capacitor) motor _______. -
CORRECT ANSWER: D. All of the above - It will run slowly ; inefficiently / run
backwards / overload
1. Which can replace a 220 volt 20 MFD capacitor - CORRECT ANSWER: D. None of
the above (All options don't make sense) (microfarads can't differ from replacement?)
2. When hooking up a transformer that has multiple primary leads for different voltages
the unused leads would be ________. - CORRECT ANSWER: capped off with wire buts
individually. Preventing shorts
3. If a circuit breaker or fuse trips immediately upon power, most likely________ -
CORRECT ANSWER: direct short to ground
4. When replacing a half horse motor with another half horse motor _________ -
CORRECT ANSWER: check the amp draw and speed of the motor
6. The reason for having a resistor solder to a start capacitor terminal is so _________ -
CORRECT ANSWER: It will bleed off the wattage and keep the motor from workin too
hard
7. The purpose of a megohmmeter is to________. - CORRECT ANSWER: can help to
find places in the windings where the insulation is getting weak
, A (PSC) permanent split capacitor motor has a blank _________. - CORRECT
ANSWER: run capacitor only
A common practice in condensing units is to use a contactor which only opens one leg
so that ______. - CORRECT ANSWER: provide off cycle heat to the compressor
A current magnetic relay (CMR ) opens and closes it's contacts based on ________. -
CORRECT ANSWER: D. Current in the run winding
A direct drive motor is usually connected to a load with _________. - CORRECT
ANSWER: a coupling
A fuse for a motor circuit has to be different than the type of fuse used for heater
circuits. - CORRECT ANSWER: C. there has to be a time delay because of LRA
A permanent split capacitor (PSC) motor that is running and up to speed will have the
start winding ____. - CORRECT ANSWER: in series with the run winding
A service factor of an electrical motor is determined by ________. - CORRECT
ANSWER: motors reserve capacity
A sleeve bearing would typically be used in a motor that operates with a ________. -
CORRECT ANSWER: a light load where noise is a factor
A split phase motor can use a ______ to energize and de energize The start winding -
CORRECT ANSWER: Centrifugal switch
A split phase motor has a ____ winding and a _____ winding. - CORRECT ANSWER:
Start, run
A split phase motor that has a current relay and a start capacitor is called a _______ -
CORRECT ANSWER: CSIR MOTOR capacitor start induction run motor
