Technician A says that a crankshaft determines the stroke of an engine. Technician B says that the length of the connection rod determines the stroke of an engine. Which technician is correct? A. A only

B. B only

C. Both

D. Neither

The answer is A. A only

Explanation:

Technician A is right as the stroke is determined only by the crankshaft. It is the distance traveled by the piston from Top dead center (TDC) and bottom dead center (BDC).

The connecting rod will not alter the distance covered during a stroke rather it will impact on the placement of the piston in the top dead center.