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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

depends on other factors
remains same
increases
decreases

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Refrigeration and Air Conditioning
Vertical lines on pressure-enthalpy chart show constant

Total heat lines
Pressure lines
Temperature lines
Entropy lines

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Refrigeration and Air Conditioning
The specific humidity during humidification process

Decreases
Remains constant
Increases
None of these

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Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

At which refrigerant gas becomes liquid
Of freezing zone
Of cooling medium
Of evaporator

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Refrigeration and Air Conditioning
The evolution of heat of solution takes place in ammonia absorption plant when

Ammonia vapour is driven out of solution
Ammonia vapour goes into solution
Weak solution mixes with strong solution
Lithium bromide mixes with ammonia

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Refrigeration and Air Conditioning
In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by

Absorber, generator and liquid pump
Generator
Liquid pump
Absorber and generator

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MORE MCQ ON Refrigeration and Air Conditioning

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