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GATE 2020: Theory of Machine Quiz 4 (App update required to attempt this test)
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Question 1
Which is correct in case of flywheel?
Question 2
The value of sensitivity for an isochronous governor is ___________.
Question 3
Torque and angular speed data over one cycle for a shaft carrying a flywheel are shown in the figures. The moment of inertia (in kg.m2) of the flywheel is
Question 4
Consider a flywheel whose mass M is distributed almost equally between a heavy, ring-like rim of radius R and a concentric disk-like feature of radius R/2. Other parts of the flywheel, such as spokes, etc. have negligible mass. The best approximation for 
, if the moment of inertia of the flywheel about its axis of rotation is expressed as
. is_____________
, if the moment of inertia of the flywheel about its axis of rotation is expressed as. is_____________ Question 5
A riveting machine is driven by a motor of 5 kW. The actual time to complete one riveting operation is 1.5s and it absorbs 10 kN-m of energy. The moving parts including the flywheel are equivalent to 200 kg at 0.5 radius. Speed of flywheel (in rad/s) after riveting, if it was 350 rpm before riveting will be
Question 6
The spring loaded Hartnell governor as shown in fig. The extreme radii of rotation of balls are 60 mm and 130 mm. The speeds at the extreme positions are 350 rpm and 400 rpm.
The mass of each ball is 3 kg.
The obliquity effects of arms and moment due to weight of the balls is negligible. The difference between maximum and minimum spring force (in N) is __________.
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