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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant pressure lines
Constant temperature lines
Constant entropy lines
Constant total heat lines

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Refrigeration and Air Conditioning
Presence of moisture in a refrigerant affects the working of

Evaporator
Expansion valve
Condenser
Compressor

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Brass
Aluminium
Copper
Steel

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Refrigeration and Air Conditioning
Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system

Strong solution to weak solution
Weak solution to strong solution
Ammonia vapours to weak solution
Strong solution to ammonia vapour

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Refrigeration and Air Conditioning
The conditioned air supplied to the room must have the capacity to take up

Room sensible heat load only
Both room sensible heat and latent heat loads
None of the listed here
Room latent heat load only

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Refrigeration and Air Conditioning
Most thermostatic expansion valves are set for a superheat of

20°C
10°C
5°C
15°C

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MORE MCQ ON Refrigeration and Air Conditioning

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