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Thermodynamics Test 5
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  • Question 1/10
    1 / -0.25
    Which is the incorrect statement about Carnot cycle
  • Question 2/10
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    Choose Kelvin-Plank statement among the following
  • Question 3/10
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    If a refrigerator and heat pump operate between the same temperature limits, then the difference between the COP of heat pump and refrigerator is:
  • Question 4/10
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    The efficiency of a Carnot engine is 25%. The efficiency is increased to 30% when the sink temperature is reduced by 20°C. What will be the source temperature?

  • Question 5/10
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    A device/devices which transfers heat from low temperature region to high temperature is
  • Question 6/10
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    The capacity of a refrigerator is one tonne. This means that the heat removing capacity of the refrigerator is
  • Question 7/10
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    The efficiency of a heat engine working on the Carnot's cycle between 900°C and 300°C will be-
  • Question 8/10
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    If the temperature of the source is increased keeping sink temperature fixed, the efficiency of the Carnot engine

  • Question 9/10
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    A heat engine that has a thermal efficiency of 100 percent, violates
  • Question 10/10
    1 / -0.25
    The heat flows from a cold body to a hot body with aid of an external source. The statement is given by
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