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SSC-JE ME || Theory of Machines 6
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Question 1
Flywheel absorbs energy during those periods of crank rotation when
Question 2
The maximum speed and minimum speed in r.p.m. at a Watt governor are 72 and 68 respectively. The range of speed of the governor is :
Question 3
Maximum fluctuation of kinetic energy in an engine has been calculated to be 2600 J. Assuming that the engine runs at an average speed of 200 rpm, the polar mass moment of inertia (in kg.
) of a fly wheel to keep the speed fluctuation within ±0.5% of the average speed is _________
) of a fly wheel to keep the speed fluctuation within ±0.5% of the average speed is _________ Question 4
The crank of a slider-crank punching press has a mass moment of inertia of
. The figure below shows the torque demand per revolution for a punching operation. If the speed of the crank is found to drop from 30 rad/s to 20rad/s during punching, what is maximum torque demand during the punching operation?
. The figure below shows the torque demand per revolution for a punching operation. If the speed of the crank is found to drop from 30 rad/s to 20rad/s during punching, what is maximum torque demand during the punching operation? Question 5
In a variable speed SI. Engine, the maximum torque occurs at the maximum ______
Question 6
The ratio of maximum fluctuation of energy to work done per cycle is called
Question 7
If f C is the coefficient of speed fluctuation of a fly wheel then the ratio of ωmax/ωmin will be:
Question 8
Which of the following is correct
Question 9
Coefficient of fluctuation of energy for the flywheel is given by
Question 10
The maximum & minimum speed of a flywheel during a cycle are N1 & N2 rpm respectively. The coefficient of steadiness of the flywheel is-
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