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A reversible engine converts one-sixth o...

A reversible engine converts one-sixth of the heat input into work. When the temperature of the sink is reduced by `62^@C` , the efficiency of the engine is doubled. The temperatures of the source and sink are

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372 K, 310 K
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SL ARORA-THERMODYNAMICS-Problems for self practice
  1. A carnot engine absorbs 1000J of heat energy from a reservoir at 127^(...

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  2. A reversible heat engine operates with an efficiency of 50 %. If durin...

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  3. A reversible engine converts one-sixth of the heat input into work. Wh...

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  4. Calculate the difference in efficiencies of a Carnot engine working be...

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  5. An ideal gas heat engine operates in a Carnot's cycle between 227^(@)C...

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  6. The boling point of water at a pressure of 50 atmosphere is 250^(@)C. ...

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  7. A perfect carnot engine has source temp. 227^(@)C and sink temp. 127^(...

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  8. A Carnot engine takes in heat from a reservoir of heat at 427^(@)C. Ho...

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  9. A Carnot's engine operates with an efficiency of 40% with its sink at ...

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  10. A Carnot engine works between 200^(@)C and 0^(@)C and another carnot e...

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  11. Two carnot engines A and B are operated in series. The first one A rec...

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  12. One mole of an ideal gas is taken in a Carnot engine working between 2...

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  13. In a double acting steam engine, the average pressure in 90Ncm^(-2), t...

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  14. In a reciprocating steam engine, the avearge pressure of steam is 50 N...

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  15. An engine develops 33250 W power, consuming 10 kg fule per hour. If th...

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  16. A petrol engine consumes 5 kg of petrol in one hour, the calorific va...

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  17. One kilograme of coal produces 3.6xx10^(6) cal of heat during combusti...

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  18. In a petrol engine, the rate of production of heat due to combustion o...

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  19. In a petrol engine,the rate of production of heat due to the combustio...

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  20. In a refrigerator, heat from inside at 270 K is transferred to a room ...

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