HVAC EXCELLENCE ACTUAL EXAM PAPER
2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ If a 30 lb container of $-410A refrigerant has been stored over night at 70
degrees F, the pressure in the cylinder should be approximately.
Answer: 201 Degrees Faranheit
◍ when connecting copper to steel, the recommended brazing filler alloy is a.
Answer: 45 % silver alloy
◍ A drain trap should be installed on a split system when the.
Answer: Air handler drain is on the negative side
◍ Moisture in the refrigeration system will cause.
Answer: Compressure Failure
◍ The Clearance space in a reciprocating compressor.
Answer: has an effect on compressor capacity
◍ Split system with Compressor change out, unit is not cooling. Evaporator
seems starved, liquid line is sweating leaving the drier, mostlikely.
Answer: Debris from the burned out compressor has clogged the filter drier
◍ A low pressure cut-off switch is used to.
Answer: Establish a minimum operating pressure in the evaporator
◍ A sight glass would normally be located.
Answer: in the liquied line, before the metering device
◍ Liquid slugging is.
Answer: Liquid refrigerant in the compressor clearance space
◍ The movement of heat by way of fluid or is called; air.
, Answer: convection
◍ A compressor that has a broken reed valve will cause these symptoms.
Answer: high suction pressure and low discharge pressure
◍ A liquid reciever is used to.
Answer: Store liquid refrigerant
◍ In an air conditioning system that uses a thermostatic expansion valve, the
temperature of the evaporator outlet will usually be:.
Answer: Warmer than the evaporator inlet
◍ Refrigerant R-134a vapor enters the condenser at 124psig, 100 degrees
faranheit, It leaves as a liquid from the condenser, sub-cooled 20 degrees
faranheit, and the pressure will be approximately.
Answer: 124 psig
◍ A liquid-to-suction heat exchanger is often used to.
Answer: Increase liquid subcooling
◍ The oil separator is installed in the.
Answer: Discharge line
◍ What is the recomended residential indoor relative humidity for summer?.
Answer: 50%
◍ There are 3 basic types of condensers, air cooled, water cooled, and.
Answer: evaporative cooled
◍ A decrease in superheat causes the thermostatic expansion valve to.
Answer: Close
◍ Which of the following represnet the right order for the functionsof a
condenser.
Answer: De-Superheats, Condenses, and Sub-cools
◍ Which of hte following can not be used as a low ambient temperature
control?.
Answer: Crankcase regulating valves
2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ If a 30 lb container of $-410A refrigerant has been stored over night at 70
degrees F, the pressure in the cylinder should be approximately.
Answer: 201 Degrees Faranheit
◍ when connecting copper to steel, the recommended brazing filler alloy is a.
Answer: 45 % silver alloy
◍ A drain trap should be installed on a split system when the.
Answer: Air handler drain is on the negative side
◍ Moisture in the refrigeration system will cause.
Answer: Compressure Failure
◍ The Clearance space in a reciprocating compressor.
Answer: has an effect on compressor capacity
◍ Split system with Compressor change out, unit is not cooling. Evaporator
seems starved, liquid line is sweating leaving the drier, mostlikely.
Answer: Debris from the burned out compressor has clogged the filter drier
◍ A low pressure cut-off switch is used to.
Answer: Establish a minimum operating pressure in the evaporator
◍ A sight glass would normally be located.
Answer: in the liquied line, before the metering device
◍ Liquid slugging is.
Answer: Liquid refrigerant in the compressor clearance space
◍ The movement of heat by way of fluid or is called; air.
, Answer: convection
◍ A compressor that has a broken reed valve will cause these symptoms.
Answer: high suction pressure and low discharge pressure
◍ A liquid reciever is used to.
Answer: Store liquid refrigerant
◍ In an air conditioning system that uses a thermostatic expansion valve, the
temperature of the evaporator outlet will usually be:.
Answer: Warmer than the evaporator inlet
◍ Refrigerant R-134a vapor enters the condenser at 124psig, 100 degrees
faranheit, It leaves as a liquid from the condenser, sub-cooled 20 degrees
faranheit, and the pressure will be approximately.
Answer: 124 psig
◍ A liquid-to-suction heat exchanger is often used to.
Answer: Increase liquid subcooling
◍ The oil separator is installed in the.
Answer: Discharge line
◍ What is the recomended residential indoor relative humidity for summer?.
Answer: 50%
◍ There are 3 basic types of condensers, air cooled, water cooled, and.
Answer: evaporative cooled
◍ A decrease in superheat causes the thermostatic expansion valve to.
Answer: Close
◍ Which of the following represnet the right order for the functionsof a
condenser.
Answer: De-Superheats, Condenses, and Sub-cools
◍ Which of hte following can not be used as a low ambient temperature
control?.
Answer: Crankcase regulating valves
