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Efficiency of a heat engine working betw...

Efficiency of a heat engine working between a given source and sink is 0.5 . Coefficient of performance of the refrigerator working between the same source and the sink will be

A

`1.5`

B

25

C

`0.25`

D

4

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A
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AAKASH INSTITUTE ENGLISH-Mock test 18-EXAMPLE
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  2. If one mole of gas doubles its volume at temperature T isothermally th...

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  3. For an adiabatic process if volume becomes 1^(nd)/(32) of initial valu...

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  4. iIn isochoric process change ib internal energy of the gas in triangle...

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  5. For an adiabatic process :

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  6. If a pair of linear equations is consistant , then the lines represent...

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  7. A gas expands from 2m^3 to 2.5m^3 at constant pressure 10^3 pa, the wo...

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  8. Calculate the work done (in joules) when 0.2 mole of an ideal gas at 3...

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  9. A gas is compressed at a constant pressure of 50 N/m^2 from a volume o...

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  10. During an adiabatic process, the pressure of a gas is found to be prop...

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  11. The slope of P-V graph for isochoric process is

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  12. Which of the following formula is correct ? [ Where symbols have their...

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  13. A wire of resistance 8R is bent in the form of a circle. What is the e...

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  14. A reversible engine converts one-sixth of heat input into work. When t...

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  15. A carnot engine whose sink is at 290 K has an efficiency of 30%. By ho...

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  16. The mathematical aptitude score of 10 computer programmers with their ...

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  17. A carnot cycle consists of

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  18. Efficiency of a heat engine working between a given source and sink is...

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