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Mechanical Engineering - Practice Test - 32

Q1:

"Second law of thermodynamics explains
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Q2:

"COP of heat pump is more than heat refrigerator by
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Q3:

"In a refrigeration system, the expansion device is connected between the
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Q4:

"The vapour compression refrigerator employs the following cycle
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Q5:

"For obtaining high COP, the pressure range of compressor should be
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Q6:

"Bell Coleman cycle is a
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Q7:

"Air refrigeration cycle is used in
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Q8:

"In a reversed Brayton cycle, the heat is absorbed by the air during
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Q9:

"The air cooling system mostly used in transport type aircrafts is
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Q10:

"The cooling system used for supersonic aircrafts and rockets is
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Q11:

"The COP of a domestic refrigerator
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Q12:

"Carbon dioxide is
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Q13:

"Presence of moisture in a refrigerant affects the working of
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Q14:

"Which of the following is not a desirable property of a refrigerant?
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Q15:

"The operating pressure for refrigerating units using R-12 as a refrigerant is
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Q16:

"Vertical lines on pressure-enthalpy chart show constant
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Q17:

"During heating and dehumidification process, dry bulb temperature
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Q18:

"The curved lines on a psychrometric chart indicates
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Q19:

"During cooling and dehumidification, dry bulb temperature
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Q20:

"The specific humidity during heating and humidification process.
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Q21:

"Air conditioning system is used for
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Q22:

"Window air conditioner is used for
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Q23:

"In a split air conditioner Indoor unit has
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Q24:

"In a split air conditioner Out door unit has
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Q25:

"The sensible heat factor for auditorium and cinema Hall is kept as
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