Q1: Refrigeration ka main purpose hota hai:
(A) Heat remove karna from a space ya substance to maintain low temperature
(B) Heat generate karna
(C) Work output produce karna
(D) None
Answer: (A) Heat remove karna from a space ya substance to maintain low temperature
Q2: Air refrigeration aur vapor refrigeration ka main difference hota hai:
(A) Air refrigeration mein air as working fluid, vapor refrigeration mein refrigerant
(B) Air refrigeration mein refrigerant
(C) Vapor refrigeration mein air
(D) None
Answer: (A) Air refrigeration mein air as working fluid, vapor refrigeration mein refrigerant
Q3: Coefficient of Performance (COP) ka formula hai:
(A) COP = Q_L / W
(B) COP = W / Q_L
(C) COP = Q_H / W
(D) None
Answer: (A) COP = Q_L / W
Q4: Refrigeration effect ka matlab hai:
(A) Heat removed from refrigerated space
(B) Work input
(C) Heat rejected to surroundings
(D) None
Answer: (A) Heat removed from refrigerated space
Q5: Work input ka matlab hai:
(A) Energy supplied to run the refrigeration cycle
(B) Heat removed
(C) Heat rejected
(D) None
Answer: (A) Energy supplied to run the refrigeration cycle
Q6: Refrigeration cycle ka main components include:
(A) Compressor, Condenser, Expansion device, Evaporator
(B) Pump, Boiler, Turbine
(C) Fan, Heater, Coil
(D) None
Answer: (A) Compressor, Condenser, Expansion device, Evaporator
Q7: Sensible heat ka matlab hai:
(A) Temperature change without phase change
(B) Heat during phase change
(C) Only work
(D) None
Answer: (A) Temperature change without phase change
Q8: Latent heat ka matlab hai:
(A) Heat transfer during phase change without temperature change
(B) Sensible heat
(C) Only conduction
(D) None
Answer: (A) Heat transfer during phase change without temperature change
Q9: Refrigerant ka function hota hai:
(A) Heat absorb karna evaporator mein aur reject karna condenser mein
(B) Generate heat
(C) Increase pressure only
(D) None
Answer: (A) Heat absorb karna evaporator mein aur reject karna condenser mein
Q10: Refrigeration load ka matlab hai:
(A) Heat that must be removed from space or substance
(B) Work input
(C) Heat rejected to surroundings
(D) None
Answer: (A) Heat that must be removed from space or substance
Q11: Ideal vapor-compression refrigeration cycle ka main working fluid hota hai:
(A) Refrigerant
(B) Air
(C) Water
(D) None
Answer: (A) Refrigerant
Q12: Air refrigeration cycle commonly use hota hai in:
(A) Aircrafts
(B) Houses
(C) Refrigerators
(D) None
Answer: (A) Aircrafts
Q13: Heat rejected in condenser hoti hai:
(A) Refrigerant ka latent heat + sensible heat
(B) Only latent heat
(C) Only work
(D) None
Answer: (A) Refrigerant ka latent heat + sensible heat
Q14: Work done by compressor depend karta hai:
(A) Refrigerant type, pressure ratio
(B) Only temperature
(C) Only area
(D) None
Answer: (A) Refrigerant type, pressure ratio
Q15: Refrigeration system ka main objective hota hai:
(A) Maintain low temperature for preservation or comfort
(B) Generate high temperature
(C) Produce work only
(D) None
Answer: (A) Maintain low temperature for preservation or comfort
Q16: Air refrigeration cycle mein expansion ka kaam hota hai:
(A) Pressure aur temperature reduce karna before evaporator
(B) Increase pressure
(C) Reject heat
(D) None
Answer: (A) Pressure aur temperature reduce karna before evaporator
Q17: Saturation temperature define karti hai:
(A) Temperature at which liquid boils at given pressure
(B) Temperature at which vapor condenses
(C) Both
(D) None
Answer: (A) Temperature at which liquid boils at given pressure
Q18: Refrigeration effect aur work input ke ratio define karti hai:
(A) Coefficient of Performance (COP)
(B) Heat transfer coefficient
(C) Efficiency only
(D) None
Answer: (A) Coefficient of Performance (COP)
Q19: Heat rejected in condenser ka temperature usually:
(A) Higher than evaporator temperature
(B) Same as evaporator
(C) Lower than evaporator
(D) None
Answer: (A) Higher than evaporator temperature
Q20: Refrigeration systems ka main application hota hai:
(A) Food preservation, Air conditioning, Industrial cooling
(B) Boilers only
(C) Only turbines
(D) None
Answer: (A) Food preservation, Air conditioning, Industrial cooling