First slide

Heat engine

Question

A Carnot engine working between 300 K and 600 K has a work output of 800 J per cycle. The amount of heat energy supplied to the engine from the source in each cycle is:

Easy

A

800 J
B

1600 J
C

3500 J
D

6400 J

Solution

$\frac{W}{Q_{1}} = 1 - \frac{T_{2}}{T_{1}} \Rightarrow Q_{1} = \frac{W}{1 - \frac{T_{2}}{T_{1}}}$

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