Answer :
Final answer:
The crankshaft is not part of the valve train in an engine, which comprises the camshaft, rocker arms, and valve springs. for hence, option (d) is the correct answer.
Explanation:
The crankshaft is not part of the valve train in an engine. The valve train consists of components such as the camshaft, rocker arms, and valve springs. The camshaft controls the opening and closing of the valves, the rocker arms help transmit motion from the camshaft to the valves, and the valve springs ensure the proper closing of the valves.
The crankshaft is not part of the valve train; it converts piston movement into rotation and is separate from the valve operating components.
The component that is not part of the valve train is (b) Crankshaft. The valve train typically consists of the camshaft, rocker arms, and valve springs, which work together to open and close the valves in an internal combustion engine. The crankshaft, on the other hand, is responsible for converting the up-and-down movement of the pistons into rotational motion, and although it is a critical component of an engine, it is not considered part of the valve train.
