A. 0.15
B. 1.5
C. 4.5
D. 6.5
Related Mcqs:
- Domestic refrigerator usually works on the _____________ refrigeration cycle?
A. Carnot
B. Air
C. Absorption
D. vapour-ejection - The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is__________________?
A. Less
B. More
C. Same
D. Dependent on climatic conditions - COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about____________________?
A. 0.5
B. 3.5
C. 4.5
D. 8.5 - Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is_____________________?
A. Positive
B. Negative
C. Zero
D. Infinity - A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?
A. Vapor compression cycle using expansion valve
B. Air refrigeration cycle
C. Vapor compression cycle using expansion engine
D. Carnot refrigeration cycle - What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR (where, T1 and T2 are source & surrounding temperatures respectively.) ?
A. TR/(T2 – TR) × (T1 – T2)/T1
B. TR/(T2 – TR) × T1/(T1 – T2)
C. TR/(T1 – TR) × (T1 – T2)/T1
D. None of these - Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system ?
A. Expansion valve
B. Condenser
C. Refrigerator
D. Compressor - A refrigerator may be termed as a____________________?
A. Heat pump
B. Heat engine
C. Carnot engine
D. None of these - One ton of refrigeration capacity is equivalent to the heat removal rate of____________________?
A. 50 kcal/hr
B. 200 BTU/hr
C. 200 BTU/minute
D. 200 BTU/day - A refrigerator works on the principle of _____________ law of thermodynamics?
A. Zeroth
B. First
C. Second
D. Third
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