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ISRO ME 2019 THEORY OF MACHINES 2

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Question 1

In an Oldham’s Coupling, the maximum velocity of sliding is 0.302 m/s. The driving shaft revolves at 160 rpm. Find the distance between the two parallel shafts (in mm) ___________.

Question 2

Observe the following figure, a portion of gear teeth.The backlash for the gear in mm will be
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Question 3

An governor has its arms a = b = 27.94cm. If r = 20.32 cm determine the controlling force for the isochronous governor

Question 4

A reciprocating engine is rotating with an angular velocity of 25 rad/s. if the length of the connecting rod is 100 mm and radius of the crank is halved than the length of the connecting rod. At an instant when the crank is at angle 90 degree from the line of action of the stroke, What should be the acceleration of the slider in m/s2.

Question 5

A mass m is attached at centre of rod having length 2b. The rod is in horizontal position through a spring having stiffness a. If we neglect the weight of rod and spring, then the undamped natural frequency of particular system will be:

Question 6

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 7

Determine the no. of instantaneous centers that would be required for a plier shown below

Question 8

A four-bar mechanism O₂O₄BC is shown in the figure with O₂O₄=300mm, O₂B=200mm and input link makes an angle 60 degree with positive x-axis. The I centre I₂₄is located along the line joining O₂O₄left side of O₂ at a distance 150 mm from O₂. The input link rotate with angular velocity of 3 rad/s , find the angular velocity of the output link in rad/s.

Question 9

For the Gear train shown in the figure:

If Gear S has 100 teeth, A has 10 teeth and Gear C has 30 teeth, then the Gear B has ____ teeth.
[For all gears, module = 8 mm]

Question 10

In Gyroscopic Couple, direction of angular momentum is similar to:

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ESE & GATE ME Theory of Machines & Vibrations

Jul 24ESE & GATE ME