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An engine has an efficiency of 1/6. When...

An engine has an efficiency of `1/6`. When the temperature of sink is reduced by `62^(@)C`, its efficiency is doubled. Temperature of the source is

A

124°

B

37°C

C

62°C

D

99°C

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The correct Answer is:
D
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MOTION-Thermodynamics-EXERCISE - 3 SECTION - A
  1. Assertion : The Carnot cycle is useful in understanding the performanc...

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  2. If the temperature of the sink of a Carnot engine having an efficiency...

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  3. An engine has an efficiency of 1/6. When the temperature of sink is re...

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  4. If Q, E and W denote respectively the heat added, change in internal e...

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  5. On a new scale of temperature (which is linear) and called the W scale...

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  6. If Q, E and W denote respectively the heat added, change in internal e...

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  7. The temperature -entropy diagram of a reversible engine cycle is given...

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  8. In thermodynamic processes which of the following statement is not tru...

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  9. The internal energy change in a system that has absorbed 2 kcal of hea...

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  10. If DeltaU and Delta W represent the increase in internal energy and wo...

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  11. A monoatomic gas at pressure P(1) and volume V(1) is compressed adiaba...

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  12. Two rigid boxes containing different ideal gases are placed on a table...

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  13. Assertion: The isothermal curves intersect each other at a certain poi...

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  14. A perfect gas goes from a state A to another state B by absorbing 8 × ...

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  15. During an isothermal expansion, a confined ideal gas does -150 J of wo...

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  16. A mass of diatomic gas(gamma=1.4) at a pressure of 2 atomphere is comp...

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  17. A thermodynamic system is taken through the cycle ABCD as shown in the...

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  18. An ideal gas goes from State A to state B via three different process ...

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  19. One mole of an ideal gas goes from an initial state A to final state B...

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  20. Conversion of water to steam is accompanied by which process?

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