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Carnot Cycle

An automobile...

Question

An automobile engine absorbs $1600 J$ of heat from a hot reservoir and expel $1000 J$ to a cold reservoir in each cycle.Find the efficiency of the cycle ?

A

37.5

%

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B

47.5

%

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C

40

%

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D

30

%

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Solution

The correct option is A $37.5$ %
The efficiency , $η = 1 - \frac{Q_{c}}{Q_{h}} = 1 - \frac{1000}{1600} = 1 - 0.625 = 0.375$
The efficiency in % is $= 0.375 \times 100 = 37.5$ %

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