The distance that the piston moves from BDC to TDC is

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Multiple Choice

The distance that the piston moves from BDC to TDC is

Explanation:
Piston position changes are tied to crankshaft rotation. Moving from bottom dead center to top dead center requires half of a full crank revolution. Since a full revolution is 360 degrees, half of that is 180 degrees. So the piston travels the full stroke length as the crankshaft turns 180 degrees. The other options don’t fit because a quarter turn (90 degrees) hasn’t reached the top yet, three-quarters turn (270 degrees) is past the halfway point and hasn’t completed the cycle to the top, and a full turn (360 degrees) brings the crank back to the starting bottom position.

Piston position changes are tied to crankshaft rotation. Moving from bottom dead center to top dead center requires half of a full crank revolution. Since a full revolution is 360 degrees, half of that is 180 degrees. So the piston travels the full stroke length as the crankshaft turns 180 degrees.

The other options don’t fit because a quarter turn (90 degrees) hasn’t reached the top yet, three-quarters turn (270 degrees) is past the halfway point and hasn’t completed the cycle to the top, and a full turn (360 degrees) brings the crank back to the starting bottom position.

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