A/C Midterm Exam Questions And
Already Passed Answers.
The A/C condenser is normally positioned: - Answer In front of the radiator
Heat is transferred from areas of: - Answer Higher temperature to lower temperature, 2nd Law of
Thermodunamies states that heat always flows from got to cold
The O-rings used for R-12 and R-134a type A/C systems are being discussed. Tech A says that given the
same dimensions, NBR O-rings may be used in either system. Tech B says that H-NBR O-rings with the
same dimensions may be used with either system. Who is correct? - Answer Neither A nor B
Most hybrid vehicles us a __________ to drive the AC compressor. - Answer High-voltage electric
motor mid term
A sight glass in an A/C system shows signs of bubbles when the A/C is turned on. Tech A says that in an R-
12 system, it means the system is overcharged. Tech B says that in an R-134a system, it means the
system is undercharged. Who is correct? - Answer Neither A nor B
The heating, ventilation, and air-conditioning (HVAC) system is designed to do all of these EXCEPT: -
Answer Defrost the rear windshield (the back light)
The purpose of the A/C compressor is to: - Answer Change a low-pressure gas refrigerant to a high-
pressure gas refrigerant
The A/C accumulator is located between the: - Answer Evaporatoe and the compressor
The amount of heat required to raise the temperature of one pound of 32°F (0°C) water at atmospheric
pressure by 1°F would be: - Answer 1 Btu
Already Passed Answers.
The A/C condenser is normally positioned: - Answer In front of the radiator
Heat is transferred from areas of: - Answer Higher temperature to lower temperature, 2nd Law of
Thermodunamies states that heat always flows from got to cold
The O-rings used for R-12 and R-134a type A/C systems are being discussed. Tech A says that given the
same dimensions, NBR O-rings may be used in either system. Tech B says that H-NBR O-rings with the
same dimensions may be used with either system. Who is correct? - Answer Neither A nor B
Most hybrid vehicles us a __________ to drive the AC compressor. - Answer High-voltage electric
motor mid term
A sight glass in an A/C system shows signs of bubbles when the A/C is turned on. Tech A says that in an R-
12 system, it means the system is overcharged. Tech B says that in an R-134a system, it means the
system is undercharged. Who is correct? - Answer Neither A nor B
The heating, ventilation, and air-conditioning (HVAC) system is designed to do all of these EXCEPT: -
Answer Defrost the rear windshield (the back light)
The purpose of the A/C compressor is to: - Answer Change a low-pressure gas refrigerant to a high-
pressure gas refrigerant
The A/C accumulator is located between the: - Answer Evaporatoe and the compressor
The amount of heat required to raise the temperature of one pound of 32°F (0°C) water at atmospheric
pressure by 1°F would be: - Answer 1 Btu
