List the four strokes that occur in a four-stroke engine.

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Multiple Choice

List the four strokes that occur in a four-stroke engine.

Explanation:
The four-stroke cycle runs in this order: intake, compression, power, exhaust. During intake, the piston moves down and the intake valve opens to draw the air-fuel mixture into the cylinder. Then the valves close and the piston moves up to compress the charge. In the power stroke, the compressed mixture is ignited, causing expansion that pushes the piston down and delivers power to the crankshaft. Finally, the exhaust stroke opens the exhaust valve and the piston moves up again to push the burnt gases out of the cylinder. This sequence repeats, requiring two full crankshaft revolutions per cycle. Any other ordering would disrupt charging, combustion, and exhaust flow, so this order is the correct one.

The four-stroke cycle runs in this order: intake, compression, power, exhaust. During intake, the piston moves down and the intake valve opens to draw the air-fuel mixture into the cylinder. Then the valves close and the piston moves up to compress the charge. In the power stroke, the compressed mixture is ignited, causing expansion that pushes the piston down and delivers power to the crankshaft. Finally, the exhaust stroke opens the exhaust valve and the piston moves up again to push the burnt gases out of the cylinder. This sequence repeats, requiring two full crankshaft revolutions per cycle. Any other ordering would disrupt charging, combustion, and exhaust flow, so this order is the correct one.

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