Question

which of these components convert(s) reciprocating movement of the pistons into rotary motion?
○ a. camshaft
○ b. crankshaft
○ c. flywheel
○ d. piston rings

Explanation:

• Option a: A camshaft is used to open and close valves in an engine, not to convert piston reciprocating motion to rotary motion.
• Option b: A crankshaft is designed to convert the reciprocating (up - down) motion of pistons into rotary (circular) motion, which is essential for powering the vehicle's wheels or other mechanical components.
• Option c: A flywheel stores rotational energy and helps in smoothing out the power delivery, but it does not convert the piston's reciprocating motion to rotary motion.
• Option d: Piston rings are used for sealing the piston within the cylinder and controlling oil consumption, not for motion conversion.

Answer:

b. Crankshaft