KPEERI ALL Exams /Actual Exam 70 Questions &Correct Answer.

KPEERI ALL Exams 2025-2026/Actual Exam 70
Questions &Correct Answer.

1. The primary function of a refrigeration system is to:
A. Lower suction pressure
B. Transfer heat from low temperature to high temperature
C. Reduce compressor work
D. Increase condenser efficiency
Answer: B


2. The refrigeration cycle requires four main components:
A. Receiver, chiller, motor, valve
B. Compressor, condenser, metering device, evaporator
C. Coil, pump, fan, motor
D. Suction line, discharge line, filter, accumulator
Answer: B


3. Ammonia (R-717) is classified as:
A. A2L refrigerant
B. A1 refrigerant
C. B2L refrigerant
D. B2 refrigerant
Answer: D

,4. Ammonia has a strong odor at concentrations as low as:
A. 1 ppm
B. 5 ppm
C. 20 ppm
D. 50 ppm
Answer: B


5. The latent heat of vaporization is the:
A. Heat removed in the condenser
B. Heat added to boil the liquid
C. Temperature difference between suction and discharge
D. Compression heat
Answer: B


6. Saturation temperature is the temperature at which:
A. Liquid and vapor coexist
B. Compressor starts
C. Oil separates
D. Suction pressure increases
Answer: A


7. Superheat is measured:
A. In the condenser
B. At the compressor discharge

, C. In the evaporator outlet
D. At the expansion valve inlet
Answer: C


8. Subcooling occurs when refrigerant is cooled:
A. Below saturated vapor temp
B. Below saturated liquid temp
C. To suction temp
D. To discharge temp
Answer: B


9. High superheat at the evaporator outlet usually means:
A. Flooding
B. Starved evaporator
C. Overfeeding
D. High wet return
Answer: B


10. High head pressure most commonly indicates:
A. Low airflow over evaporator
B. Dirty condenser
C. Low charge
D. Stuck suction valve
Answer: B