HVAC EXCELLENCE ACTUAL EXAM
QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+ 2026-2027.
A refrigerant overcharge in a capillary tube air conditioning system will cause
- ANSWER-High suction pressure and high Discharge pressure
A compressor that has a broken reed valve will cause these symptoms -
ANSWER-high suction pressure and low discharge pressure
A low refrigerant charge in an AC system will cause these symptoms -
ANSWER-low suction pressure and low discharge pressure
,A TEV sensing bulb which becomes detached from the suction line will cause
these symptoms - ANSWER-high suction pressure and higher than normal
dischage pressure
a faulty condenser fan motor on an AC system will cause these symptoms -
ANSWER-high suction pressure and high discharge pressure
a dirty evaporator in an AC system will cause these symptoms - ANSWER-low
suction pressure and low discharge pressure
Heat which causes a change in temperature of a substance is called - ANSWER-
sensible heat,
Heat added to a substance without a rise in temperature; (example: liquid
refrigerant to gas) this process la called? - ANSWER-latent heat
, Heat added to the refrigerant in vapor state after the evaporation process is
called, - ANSWER-superheat
A scroll compressor moves refrigerant by means of; - ANSWER-involute
spirals
The movement of heat by way of fluid or is called; air - ANSWER-convection
The movement of heat through a solid object is called; - ANSWER-radiation
The standard unit for measuring the quantity of heat in a substance is -
ANSWER-British Thermal Unit
A refrigerant gives up heat when it; - ANSWER-it condenses
QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+ 2026-2027.
A refrigerant overcharge in a capillary tube air conditioning system will cause
- ANSWER-High suction pressure and high Discharge pressure
A compressor that has a broken reed valve will cause these symptoms -
ANSWER-high suction pressure and low discharge pressure
A low refrigerant charge in an AC system will cause these symptoms -
ANSWER-low suction pressure and low discharge pressure
,A TEV sensing bulb which becomes detached from the suction line will cause
these symptoms - ANSWER-high suction pressure and higher than normal
dischage pressure
a faulty condenser fan motor on an AC system will cause these symptoms -
ANSWER-high suction pressure and high discharge pressure
a dirty evaporator in an AC system will cause these symptoms - ANSWER-low
suction pressure and low discharge pressure
Heat which causes a change in temperature of a substance is called - ANSWER-
sensible heat,
Heat added to a substance without a rise in temperature; (example: liquid
refrigerant to gas) this process la called? - ANSWER-latent heat
, Heat added to the refrigerant in vapor state after the evaporation process is
called, - ANSWER-superheat
A scroll compressor moves refrigerant by means of; - ANSWER-involute
spirals
The movement of heat by way of fluid or is called; air - ANSWER-convection
The movement of heat through a solid object is called; - ANSWER-radiation
The standard unit for measuring the quantity of heat in a substance is -
ANSWER-British Thermal Unit
A refrigerant gives up heat when it; - ANSWER-it condenses
