The working stroke (crest) loop in a turning moment diagram of the four-stroke engine is larger and positive.

The working stroke (crest) loop in a turning moment diagram of the four-stroke engine is larger and positive. Correct Answer True

The working stroke is the combustion of gases and the work is done by gases. So it is a positive loop. During the working stroke, the expansion of gases occurs and the loop is larger compared to other loops of the strokes.
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