Refrigeration & Air Conditioning Mcqs

Q.  An important characteristic of absorption system of refrigeration is__________________?

a. noisy operation
b. quiet operation
c. cooling below 0°C
d. very little power consumption
e. its input only in the form of heating


ANSWER: See Answer
 
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MCQs:  Critical pressure of a liquid is the pressure_________________?
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MCQs:  In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is_____________________?
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MCQs:  The value of COP in vapour compression cycle is usually__________________?
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MCQs:  Condensing temperature in a refrigerator is the temperature_________________?
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MCQs:  In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be_________________?
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MCQs:  In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to___________________?
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MCQs:  Accumulators should have adequate volume to store refrigerant charge at least_________________?
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MCQs:  A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. The Cannot coefficient of performance of cycle will be_________________?
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MCQs:  In vapor compression refrigeration system, refrigerant occurs as liquid between_________________?
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MCQs:  Efficiency of a Carnot engine is given as 80%. If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle_________________?
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MCQs:  Aqua ammonia is used as refrigerant in the following type of refrigeration system_________________?
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MCQs:  If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be_________________?
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MCQs:  In a refrigeration cycle, the flow of refrigerant is controlled by___________________?
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MCQs:  The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents_____________________?
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MCQs:  Freon group of refrigerants are___________________?
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MCQs:  In vapour compression cycle using NH3 as refrigerant, initial charge is filled at_________________?
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MCQs:  On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process ________________?
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MCQs:  The leaks in a refrigeration system using Freon are detected by____________________?
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MCQs:  Moisture in freon refrigeration system causes________________?
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MCQs:  Super heating in a refrigeration cycle __________________?
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