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A carnot engine absorbs 1000J of heat en...

A carnot engine absorbs `1000J` of heat energy from a reservoir at `127^(@)C` and rejecs `600J` of heat energy during each cycle. Calculate (i) efficiency of the engine, (ii) temperature of sink, (iii) amount of useful work done per cycle.

A

`20%` and `-43^(@)` C

B

`40%` and `-33^(@)` C

C

50% and `-20^(@)` C

D

70% and `-10^(@)` C

Text Solution

Verified by Experts

The correct Answer is:
B
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DISHA PUBLICATION-THERMODYNAMICS -EXERCISE -2 : CONCEPT APPLICATOR
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  2. An ideal gas has temperature T(1) at the initial state i shown in the ...

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  3. A carnot engine absorbs 1000J of heat energy from a reservoir at 127^(...

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  4. The figure shows the P-V plot of an ideal gas taken through a cycle AB...

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  5. An ideal gas is subjected to cyclic process involving four thermodynam...

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

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  7. A monoatomic ideal gas, initially at temperature T1, is enclosed in a ...

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  8. A diatomic ideal gas is used in a Carnot engine as the working substan...

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  9. Two identical containers A and B have frictionaless pistons. They cont...

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  10. On P-V coordinates, the slope of an isothermal curve of a gas at a pre...

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  11. 0.5 mole of an ideal gas at constant temperature 27^(@) C kept inside ...

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  12. Two Carnot engines A and B are operated in series. The engine A receiv...

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  13. The above p-v diagram represents the thermodynamic cycle of.an engine,...

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  14. A certain diatomic gas has the same specific heats as an ideal gas but...

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  15. A carnot engine operating between temperatures T(1) and T(2) has effic...

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  16. For an ideal gas four processes are marked as 1,2,3 and 4 on P-V diagr...

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  17. A container with insulating walls is divided into two equal parts by a...

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

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

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  20. A refrigerator works between 4^(@)C and 30^(@)C. It is required to rem...

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