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SSC JE | Theory of Machine 6

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Question 1

Two involute gears in mesh have a module of 7.5 mm and pressure angle of 200. The gear has 60 and pinion has 32 teeth. The ratio of sliding to the rolling velocity at the pitch point, considering addenda on pinion and gear wheel as one module, will be

Question 2

Which of the following statement is correct regarding the pitch point in the cam?

Question 3

A pair of spur gears with module 5 mm and a center distance of 450 mm is used for a speed reduction of 5:1. The number of teeth on pinion is ______

Question 4

In a Hartnell governor, the mass of each ball is 3 kg. Maximum and minimum speeds are 20 rad/s and 15 rad/s whereas the limits of radius of rotation are 0.25 m and 0.15 m respectively. Neglecting obliquity, what is the lift of sleeve (in cm) if horizontal arm = 15 cm and vertical arm = 25 cm.

Question 5

A crank and slotted lever mechanism with length of slotted arm as 600mm and length of fixed link as 200mm is used to transverse motion in a shaping machine. If the radius of the crank is 100mm length. Then find the stroke length of the slotted lever mechanism in mm

Question 6

What is the mechanical advantage for a four bar linkage in toggle position?

Question 7

Belt pulley arrangement during transfer of power with no-slip is a____.

Question 8

The equation of motion of a spring-mass-damper system is given by . The damping factor for the system is

Question 9

Match the following
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Question 10

Which is correct in case of flywheel?
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Sep 23ESE & GATE ME