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GATE ME 2021 || Theory of machines Quiz 4 (App update required to attempt this test)

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Question 1

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 0.5m radius of gyration. Speed of flywheel (in rad/s) after riveting, if it was 350 rpm before riveting will be

Question 2

A flywheel should supply an energy of 400 Nm at a mean speed of 20 rad/s. What is the mass moment of inertia if the total fluctuation of speed is not to exceed

Question 3

A flywheel of moment of inertia 9.8 kg m² fluctuates by 30 rpm, if the fluctuation in the speed is not to exceed ±3%, Then the mean angular speed of the flywheel is. Take ∆E = 3 kJ

Question 4

The example of the Spring-loaded Governor is __________.

Question 5

The turning moment diagram for engine is shown below.If the mass of rotating part in the engine is 50 kg and radius of gyration as 2.1 m.if the speed of the engine fluctuates ±1.50% about the mean speed. Find shaded area A₁ as shown in figure[A₁=A₂=A₃=A₄] in Nm if the flywheel is rotating at a mean speed of 50 rad/s.
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Question 6

For a spring -controlled governor the controlling force curve comes out to be a straight line. When the controlling force is