Refrigeration & Air Conditioning Mcqs


Q.  Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of___________________?

a. 1 : 1
b. 1 : 9
c. 9 : 1
d. 1 : 3
e. 3 : 1


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton’s law, the pressure in condenser is equal to__________________?
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MCQs:  The specific volume of steam with increase in pressure decreases_____________________?
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MCQs:  The coal requirement per kW hour generation in the thermal power plant is of the order of__________________?
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MCQs:  Stoichiometric quantity of air is the___________________?
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MCQs:  Superheating of steam is done at_________________?
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MCQs:  The saturation temperature of steam with increase in pressure increases____________________?
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MCQs:  For water, at pressures below atmospheric___________________?
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MCQs:  The critical pressure at which latent heat of vaporisation is zero is________________?
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MCQs:  Coke is produced by__________________?
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MCQs:  1 kg.m is equal to_________________?
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MCQs:  Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?
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MCQs:  The equivalent evaporation of a boiler is a measure to compare _________________?
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MCQs:  Sublimation region is the region where__________________?
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MCQs:  One kg of steam sample contains 0.8 kg dry steam; it’s dryness fraction is__________________?
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MCQs:  The specific heat of superheated steam in kcal/kg is generally of the order of___________________?
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MCQs:  A wet vapour can be completely specified by__________________?
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MCQs:  On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by_______________?
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MCQs:  The dry saturated steam at very low pressure, (5-10 kg/cm2) when throttled to atmosphere will become________________?
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MCQs:  The dry saturated steam at very high pressure (150-200 kg/cm2) when throttled to atmosphere will become_______________?
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MCQs:  In a throttling process_________________?
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