GATE ME 2020 Set 2 — Question 49
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Theory of Machines & Vibrations → Balancing, Flywheels & Gyroscopes → Flywheels & Governors
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Question
The turning moment diagram of a flywheel fitted to a fictitious engine is shown in the figure.
The mean turning moment is . The average engine speed is . For fluctuation in the speed to be within of the average speed, the mass moment of inertia of the flywheel is ________ kg.m.

Correct answer
3.55 to 3.65
Solution
1.Mean Torque and Energy Fluctuation: . Fluctuation in energy is the area above/below the mean torque line.
Intervals of :- to : ,
- to : ,
- to : ,
- to : ,
2.Flywheel Parameters:
Average speed .Coefficient of speed fluctuation .
3.Moment of Inertia:
.
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