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Is cofficient of performance of refriger...

Is cofficient of performance of refrigerator always constant?

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No, cofficient of performance decreases in summer and it increases in winter, for given temperature of inside of refrigerator.
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PRADEEP-THERMODYNAMICS-Very short answer questions
  1. What thermodynamics variable is defined by (a) Zeroth law (b) First la...

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  2. Is it possible to convert internal energy into works?

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  3. An ideal gas is compressed at a constant temperature, will its interna...

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  4. Which type of motion of the molecules is responsible for internal ener...

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  5. A piece of leads is hammered. Does its internal energy increase? Does ...

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  6. In a thermodynamics process, 300 joule of heat is supplied to a gas a...

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  7. Why does a gas get heated on compression?

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  8. Can we decide whether change in internal energy of a system is due to ...

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  9. Can whole of work be converted into heat?

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  10. Can whole of heat be converted into work?

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  11. Which molecules, ice at 10^(@)C or water at 0^(@)C have greater potent...

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  12. What is specific heat of gas in isothermal changes?

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  13. What is the nature of P-V diagram for isobaric and isochoric processes...

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  14. Give one example of a heat pump.

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  15. Is it possible to construct a heat engine, which is free from thermal ...

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  16. How is efficiency of carnot engine affected by the nature of working s...

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  17. Is rusting of iron a reversible process?

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  18. Can we increase the coefficient of performance of a refrigerator by in...

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  19. A refrigerator transfers heat from the cold coling coils to the warm ...

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  20. Is cofficient of performance of refrigerator always constant?

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