164) In vapour compression cycle using NH3 as refrigerant, initial charge is filled at

suction of compressor

delivery of compressor

high pressure side close to receiver

low pressure side near receiver

Answer is:

high pressure side close to receiver

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165) Short horizontal lines on pressure-enthalpy chart show

constant pressure lines

constant temperature lines

constant total heat lines

constant entropy lines

Answer is:

constant pressure lines

166) On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process

involves no change in volume

takes place at constant temperature

takes place at constant entropy

takes place at constant pressure.

Answer is:

takes place at constant pressure.

167) One ton of the refrigeration is

the standard unit used in refrigeration problems

the cooling effect produced by melting 1 ton of ice

the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours

the refrigeration effect to produce 1 ton of ice at NTP conditions

Answer is:

the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours

168) Superheating in a refrigeration cycle

increases COP

decreases COP

COP remains unaltered

other factors decide COP

Answer is:

decreases COP

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164) In vapour compression cycle using NH3 as refrigerant, initial charge is filled at

high pressure side close to receiver

Heat transfer MCQ with Answers

Related Heat transfer MCQ with Answers

165) Short horizontal lines on pressure-enthalpy chart show

constant pressure lines

166) On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process

takes place at constant pressure.

167) One ton of the refrigeration is

the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours

168) Superheating in a refrigeration cycle

decreases COP

Heat transfer MCQ with Answers