Question 61Motor Plants - QMED

The correct answer is C) power stroke. When an air started, four-stroke cycle diesel engine is being cranked over, the starting air is admitted to each cylinder during the beginning of its power stroke. This is because the starting air is used to initiate the combustion process and start the engine, and the power stroke is the stage where the engine generates the power to move the vehicle or machine. The other options are incorrect because the intake stroke is for drawing in the air/fuel mixture, the compression stroke is for compressing the air/fuel mixture, and the exhaust stroke is for expelling the exhaust gases. The starting air is not admitted during these strokes.