Topic: Theory of Machines
Pick up the wrong statement, A flywheel
- A. Is used to limit the invitable fluctuation speed during each cycle
- B. Controls the mean speed of rotation
- C. Stores up energy and gives up whenever required
- D. Regulates the speed during one cycle of prime mover
Answer: B. Controls the mean speed of rotation
Explanation: A Flywheel resists change in rotational speed by their moment of inertia and controls the speed variations caused by the fluctuation of the engine turning moment during each cycle of operation. "A flywheel controls the speed variation caused by the engine whereas governor maintains a constant speed during load variation on the engine." Hence, a flywheel does not control the mean speed of rotation.