Defrosting of evaporators is done because

Related MCQs

• Defrosting in a refrigerator may be done by
• In a refrigerating system work done per kg of air is 20 kcal and heat extracted per kg of air is 25 kcal. The quantity of refrigerant used is 10 kg. The coefficient of performance of the system would be
• The COP of Carnot Refrigerator is 3 and it produces 1 TR. The work that will be done is equal to
• In vapour compression refrigeration cycle the following data is available Heat rejected in condenser = 65 KW Work done in compressor = 10 kw, then COP( refrigerator) is
• In vapour absorption refrigeration system heating in generator is done at 100°C, refrigeration in evaporator at 10°C and cooling by cooling water in condenser at 30°C. The (COP)max is
• No refrigerator using reversed Carnot cycle has been constructed because
• Hydrogen cannot be liquefied at room temperature by the application of pressure, because
• When the air temperature reaches the point where relative humidity is 100% the air is saturated because it cannot hold any more moisture. This temperature is called
• No refrigerator using reversed Carnot cycle has been constructed because
• With reciprocating compressor in vapour compression refrigeration system, wetcompression is not desirable because