Refrigeration & Air Conditioning Mcqs

Q.  Critical pressure of a liquid is the pressure_________________?

a. above which liquid will remain liquid
b. above which liquid becomes gas
c. above which liquid becomes vapour
d. above which liquid becomes solid
e. at which all the three phases exist together


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will______________________?
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MCQs:  Most of the domestic refrigerators work on the following refrigeration system _________________?
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MCQs:  Reducing suction pressure in refrigeration cycle_________________?
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MCQs:  The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is_________________?
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MCQs:  Which of the following refrigerants has lowest freezing point_______________?
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MCQs:  The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P_____________________?
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MCQs:  The COP of a vapor compression plant in comparison to vapor absorption plant is ________________?
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MCQs:  The evolution of heat of solution takes place in ammonia absorption plant when _____________________?
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MCQs:  The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will__________________?
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MCQs:  Cooling water is required for following equipment in ammonia absorption plant__________________?
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MCQs:  The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. per ton of refrigeration__________________?
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MCQs:  Vertical lines on pressure-enthalpy chart show constant_______________?
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MCQs:  The coefficient of performance is the ratio of the refrigerant effect to the_________________?
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MCQs:  Under-cooling in a refrigeration cycle_________________?
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MCQs:  The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is_________________?
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MCQs:  The advantage of dry compression is that________________?
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MCQs:  For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then_________________?
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MCQs:  One ton of the refrigeration is_________________?
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MCQs:  Short horizontal lines on pressure-enthalpy chart show__________________?
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MCQs:  Ammonia is __________________?
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