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MCQs

Total Questions : 1342 | Page 10 of 135 pages
Question 91. In a reversed Brayton cycle, the heat is absorbed by the air during
  1.    Isentropic compression process
  2.    Constant pressure cooling process
  3.    Isentropic expansion process
  4.    Constant pressure expansion process
 Discuss Question
Answer: Option D. -> Constant pressure expansion process
Question 92. The curved lines on a psychrometric chart indicates
  1.    Dry bulb temperature
  2.    Wet bulb temperature
  3.    Dew point temperature
  4.    Relative humidity
 Discuss Question
Answer: Option D. -> Relative humidity
Question 93. The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
  1.    Dry bulb temperature
  2.    Wet bulb temperature
  3.    Dew point temperature
  4.    Specific humidity
 Discuss Question
Answer: Option C. -> Dew point temperature
Question 94. The vertical and uniformly spaced lines on a psychrometric chart indicates
  1.    Dry bulb temperature
  2.    Wet bulb temperature
  3.    Dew point temperature
  4.    Specific humidity
 Discuss Question
Answer: Option A. -> Dry bulb temperature
Question 95. The bank of tubes at the back of domestic refrigerator is
  1.    Condenser tubes
  2.    Evaporator tubes
  3.    Refrigerant cooling tubes
  4.    Capillary tubes
 Discuss Question
Answer: Option A. -> Condenser tubes
Question 96. The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
  1.    Same
  2.    Lower
  3.    Higher
  4.    None of these
 Discuss Question
Answer: Option C. -> Higher
Question 97. Carbon dioxide is
  1.    Colourless
  2.    Odourless
  3.    Non-flammable
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 98. The humidification process, on the psychrometric chart is shown by
  1.    Horizontal line
  2.    Vertical line
  3.    Inclined line
  4.    Curved line
 Discuss Question
Answer: Option B. -> Vertical line
Question 99. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process
  1.    Involves no change in volume
  2.    Takes place at constant temperature
  3.    Takes place at constant entropy
  4.    Takes place at constant pressure
 Discuss Question
Answer: Option D. -> Takes place at constant pressure
Question 100. For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be
  1.    Small
  2.    High
  3.    Equal
  4.    Anything
 Discuss Question
Answer: Option A. -> Small

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