60) At 100% relative humidity, the temperatures - dry bulb, wet bulb, dew point and saturation are

different

two equal, two different

three equal, one different

equal

Answer is:

equal

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

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61) A refrigerant with highest critical pressure is

Carbon-dioxide

Ammonia

Freon-11

Freon-22

Answer is:

Freon-22

62) Approach of cooling tower means

difference in temperature of the cold water and atmospheric temperature

difference in temperature of hot water entering and cold water leaving

amount of heat thrown away by the cooling tower in kcal/hr

difference in temperature of the cold water leaving the cooling tower and the wet bulb temperature of surrounding air

Answer is:

difference in temperature of the cold water leaving the cooling tower and the wet bulb temperature of surrounding air

63) A power element in thermostatic expansion valve having the same refrigerant charged as the refrigeration system is called

Cross charged valve

Straight charged valve

Pilot operated solenoid valve

Three way mixing valve

Answer is:

Straight charged valve

64) Cooling effected by using secondary refrigerants is called

Direct system

Indirect system

Cross system

Isolated system

Answer is:

Indirect system

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

For more MCQ's Click Here

60) At 100% relative humidity, the temperatures - dry bulb, wet bulb, dew point and saturation are

equal

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

Related ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

61) A refrigerant with highest critical pressure is

Freon-22

62) Approach of cooling tower means

difference in temperature of the cold water leaving the cooling tower and the wet bulb temperature of surrounding air

63) A power element in thermostatic expansion valve having the same refrigerant charged as the refrigeration system is called

Straight charged valve

64) Cooling effected by using secondary refrigerants is called

Indirect system

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key