©BRIGHTSTARS EXAM SOLUTIONS
10/22/2024 19:29 PM
HVAC 102 BASIC ELECTRICITY FINAL
EXAM Questions And Answers 100% Pass
1. Which can replace a 220 volt 20 MFD capacitor - 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 ________. - answer✔capped off with wire buts individually. Preventing
shorts
3. If a circuit breaker or fuse trips immediately upon power, most likely________ -
answer✔direct short to ground
4. When replacing a half horse motor with another half horse motor _________ - answer✔check
the amp draw and speed of the motor
WHEN RUNNING A 208-230v motor ________ - answer✔A. should be 208 - 230 volts
6. The reason for having a resistor solder to a start capacitor terminal is so _________ -
answer✔It will bleed off the wattage and keep the motor from workin too hard
7. The purpose of a megohmmeter is to________. - answer✔can help to find places in the
windings where the insulation is getting weak
The biggest advantage of an ECM motor is that _______ - answer✔It can change its speed in
response to what it senses in the system.
A split phase motor has a ____ winding and a _____ winding. - answer✔Start, run
The Back EMF of a motor is ________ - answer✔all the above (induced in start winding,
voltage is higher than applied voltage, used to operate a potential relay
A split phase motor can use a ______ to energize and de energize The start winding -
answer✔Centrifugal switch
A current magnetic relay (CMR ) opens and closes it's contacts based on ________. - answer✔D.
Current in the run winding
10/22/2024 19:29 PM
HVAC 102 BASIC ELECTRICITY FINAL
EXAM Questions And Answers 100% Pass
1. Which can replace a 220 volt 20 MFD capacitor - 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 ________. - answer✔capped off with wire buts individually. Preventing
shorts
3. If a circuit breaker or fuse trips immediately upon power, most likely________ -
answer✔direct short to ground
4. When replacing a half horse motor with another half horse motor _________ - answer✔check
the amp draw and speed of the motor
WHEN RUNNING A 208-230v motor ________ - answer✔A. should be 208 - 230 volts
6. The reason for having a resistor solder to a start capacitor terminal is so _________ -
answer✔It will bleed off the wattage and keep the motor from workin too hard
7. The purpose of a megohmmeter is to________. - answer✔can help to find places in the
windings where the insulation is getting weak
The biggest advantage of an ECM motor is that _______ - answer✔It can change its speed in
response to what it senses in the system.
A split phase motor has a ____ winding and a _____ winding. - answer✔Start, run
The Back EMF of a motor is ________ - answer✔all the above (induced in start winding,
voltage is higher than applied voltage, used to operate a potential relay
A split phase motor can use a ______ to energize and de energize The start winding -
answer✔Centrifugal switch
A current magnetic relay (CMR ) opens and closes it's contacts based on ________. - answer✔D.
Current in the run winding
