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Standard XII

Physics

Carnot Cycle

A Carnot engi...

Question

A Carnot engine draws heat from a reservoir at 600 K and rejects heat to another reservoir at T K. This engine drives a reverse carnot refrigerator which absorbs heat from 200 K andrejects to T K. The total heat rejected to T K, if heat absorbed by the engine and refrigerator is same, is

5 kW per kW heat absorbed from 600 K reservoir

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3 kW per kW heat absorbed from 600 K reservoir

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4 kW per kW heat absorbed from 600 K reservoir

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2 kW per kW heat absorbed from 500 K reservoir

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Solution

The correct option is D 2 kW per kW heat absorbed from 500 K reservoir
Total heat rejected to T K reservoir
$= Q_{0} - W + Q_{0} + W = 2 Q_{0}$
$\frac{{(H R)}_{T K}}{Q_{0}} = 2$

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A Carnot engine draws heat from a reservoir at 600 K and rejects heat to another reservoir at T K. This engine drives a reverse carnot refrigerator which absorbs heat from 200 K andrejects to T K. The total heat rejected to T K, if heat absorbed by the engine and refrigerator is same, is

The correct option is D 2 kW per kW heat absorbed from 500 K reservoirTotal heat rejected to T K reservoir =Q0−W+Q0+W=2Q0 (HR)TKQ0=2

The correct option is D 2 kW per kW heat absorbed from 500 K reservoir
Total heat rejected to T K reservoir
$= Q_{0} - W + Q_{0} + W = 2 Q_{0}$
$\frac{{(H R)}_{T K}}{Q_{0}} = 2$