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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.

Greater than
Less than
None of these
Equal to

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Remains constant
None of these
Increases
Decreases

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Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.1
0.5
0.75
0.25

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

increases
decreases
remains same
depends on other factors

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Refrigeration and Air Conditioning
The dry bulb temperature during sensible heating of air

Increases
None of these
Decreases
Remains constant

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Refrigeration and Air Conditioning
One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice

In 1 minute
In 1 hour
In 24 hours
In 12 hours

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