Heat engine takes heat qh from a hot reservoir

Reference no: EM13661740

A heat engine takes heat Q_H from a hot reservoir and uses part of this energy to perform work W. Assuming that Q_Hcannot be changed, how can the efficiency of the engine be improved?

1. Decrease the work W, the heat Q_C rejected to the cold reservoir remaining unchanged.

2. Increase the work W, the heat Q_C rejected to the cold reservoir decreasing as a result.

3. Decrease the work W, the heat Q_C rejected to the cold reservoir decreasing as a result.

4. Increase the work W, the heat Q_C rejected to the cold reservoir increasing as a result.

5. Increase the work W, the heat Q_C rejected to the cold reservoir remaining unchanged.

Reference no: EM13661740

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