Q.

Flywheel is an important part of a steam engine because it –

A. accelerates the speed of the engine
B. helps the engine in keeping the speed uniform
C. decreases the moment of inertia
D. gives strength to the engine
Answer» B. helps the engine in keeping the speed uniform
Explanation: A flywheel is a rotating mechanical device that is used to store rotational energy. Flywheels have a. significant moment of inertia and thus resist changes in rotational speed, enabling the engine to run at a constant, uniform motion. In the Industrial Revolution, James Watt contributed to the development of the flywheel in the steam engine.
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