313D MOCK EXAM 2025
313D MOCK EXAM 2025 WITH GUARANTEED ACCURATE ANSWERS |VERIFIED
The capacitor must be withing __% of the rating on the label -
ACCURATE ANSWERS✔✔ 10%
what removes the start capacitor from the circuit when the compressor
approaches 75% of its synchronous speed - ACCURATE
ANSWERS✔✔ Potential Relay
what instrument is used to measure resistance - ACCURATE
ANSWERS✔✔ Ohmmeter
The constant opening and closing of the txv is called - ACCURATE
ANSWERS✔✔ Hunting
,what instrument is used to measure air flow - ACCURATE
ANSWERS✔✔ velometer
what is the maximum distance you can install a disconnect box from the
outside unit as per the electrical code of canada - ACCURATE
ANSWERS✔✔ 10' within line of site
how do you test that the Hi-limit control is not bypassed - ACCURATE
ANSWERS✔✔ turn thermostat fan to on energize heating mode and
disable the fan
if you had only 10V between R&Y what is the most likely problem? -
ACCURATE ANSWERS✔✔ Broken return line in the low voltage
system
heating and cooling mode are both running at the same time what is the
problem? - ACCURATE ANSWERS✔✔ shorted thermostat
what is the purpose of the crankcase heater in the off cycle -
ACCURATE ANSWERS✔✔ to prevent liquid refrigerant from entering
the compressor
in a 4 wire control system what 2 terminals will have a jumper at the
thermostat? - ACCURATE ANSWERS✔✔ Rh&Rc
, capacitors 20MFD@370VAC and 15MFD@370VAC are wired in series
equal? - ACCURATE ANSWERS✔✔ 8.6MFD@740VAC
capacitors 20MFD@370VAC and 15MFD@370VAC are wired in
parallel equal? - ACCURATE ANSWERS✔✔ 35MFD@370VAC
Lead from compressor common terminal is burnt and damaged, you
should? - ACCURATE ANSWERS✔✔ replace wire and connector
Type of copper tubing required for refrigeration - ACCURATE
ANSWERS✔✔ Type L
open circuit expect ____ resistance - ACCURATE ANSWERS✔✔
infinite
grounded circuit expect _____ resistance - ACCURATE ANSWERS✔✔
zero
difference between HRV and ERV - ACCURATE ANSWERS✔✔ ERV
collects sensible and laten heat(moistire)
how do you determine the type of refrigerant in a system? - ACCURATE
ANSWERS✔✔ measure outdoor temperature and refrigerant pressure
313D MOCK EXAM 2025 WITH GUARANTEED ACCURATE ANSWERS |VERIFIED
The capacitor must be withing __% of the rating on the label -
ACCURATE ANSWERS✔✔ 10%
what removes the start capacitor from the circuit when the compressor
approaches 75% of its synchronous speed - ACCURATE
ANSWERS✔✔ Potential Relay
what instrument is used to measure resistance - ACCURATE
ANSWERS✔✔ Ohmmeter
The constant opening and closing of the txv is called - ACCURATE
ANSWERS✔✔ Hunting
,what instrument is used to measure air flow - ACCURATE
ANSWERS✔✔ velometer
what is the maximum distance you can install a disconnect box from the
outside unit as per the electrical code of canada - ACCURATE
ANSWERS✔✔ 10' within line of site
how do you test that the Hi-limit control is not bypassed - ACCURATE
ANSWERS✔✔ turn thermostat fan to on energize heating mode and
disable the fan
if you had only 10V between R&Y what is the most likely problem? -
ACCURATE ANSWERS✔✔ Broken return line in the low voltage
system
heating and cooling mode are both running at the same time what is the
problem? - ACCURATE ANSWERS✔✔ shorted thermostat
what is the purpose of the crankcase heater in the off cycle -
ACCURATE ANSWERS✔✔ to prevent liquid refrigerant from entering
the compressor
in a 4 wire control system what 2 terminals will have a jumper at the
thermostat? - ACCURATE ANSWERS✔✔ Rh&Rc
, capacitors 20MFD@370VAC and 15MFD@370VAC are wired in series
equal? - ACCURATE ANSWERS✔✔ 8.6MFD@740VAC
capacitors 20MFD@370VAC and 15MFD@370VAC are wired in
parallel equal? - ACCURATE ANSWERS✔✔ 35MFD@370VAC
Lead from compressor common terminal is burnt and damaged, you
should? - ACCURATE ANSWERS✔✔ replace wire and connector
Type of copper tubing required for refrigeration - ACCURATE
ANSWERS✔✔ Type L
open circuit expect ____ resistance - ACCURATE ANSWERS✔✔
infinite
grounded circuit expect _____ resistance - ACCURATE ANSWERS✔✔
zero
difference between HRV and ERV - ACCURATE ANSWERS✔✔ ERV
collects sensible and laten heat(moistire)
how do you determine the type of refrigerant in a system? - ACCURATE
ANSWERS✔✔ measure outdoor temperature and refrigerant pressure
