Q.1
The coefficient of performance of Electrolux refrigerator is the ratio of
Q.2
Chaperon equation is applicable for registration at
Q.3
When the temperature of the surrounding is higher than the temperature of the body, then the heat loss by convection from the body to the surrounding will be
Q.4
The capacity of a domestic refrigerator is in the range of
Q.5
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of
Q.6
Allowable pressure on high pressure side or ammonia absorption system is of the order of
Q.7
Rating of a domestic refrigerator is of the order of
Q.8
Most of the domestic refrigerators work on the following refrigeration system
Q.9
In a lithium bromide absorption refrigeration system
Q.10
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is
Q.11
The alignment circle is marked on the psychrometric chart at
Q.12
The evolution of heat of solution takes place in ammonia absorption plant when
Q.13
In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the
Q.14
A vapour absorption refrigeration system
Q.15
A refrigeration system
Q.16
A thermostatic expansion valve in a refrigeration system
Q.17
Aqua ammonia is used as refrigerant in the following type of refrigeration system
Q.18
The condition of refrigerant as it leaves the compressor in a vapour compression system is
Q.19
The temperature of ammonia after compression in a vapour compression system is
Q.20
In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to
Q.21
A refrigerant compressor is used to
Q.22
A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be
Q.23
The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will
Q.24
One of the purposes of sub cooling the liquid refrigerant is to
Q.25
During adiabatic saturation process on unsaturated air __________ remains constant.
Q.26
During dehumidification process, _________ remains constant.
Q.27
The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called
Q.28
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
Q.29
Formation of frost on evaporator in refrigerator
Q.30
The condition of refrigerant after passing through the condenser in a vapour compression system is
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