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GATE 2021: Theory of Machines Rapid Quiz 2 (App update required to attempt this test)

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Question 1

The number of degrees of freedom of a planar mechanism with 10 links and 10 simple revolute joints is

Question 2

Match List-I and List-II and select the correct answer using the codes given below the lists:
List-I
A- Four-bar chain
B- Gruebler’s criterion
C- Scotch Yoke
D- Pantograph
List-II
1- simple harmonic motion.
2- Grashoff’s linkage.
3- Enlargement.
4- Degree of freedom.

Question 3

A pinion having 40 teeth drives a gear having 80 teeth. The profile of the gears is involute with 20° pressure angle, 10 mm module and 8 mm addendum. Find the contact ratio.

Question 4

For a spring -controlled governor the controlling force curve comes out to be a straight line. When the controlling force is ,the balls are  apart and when the force is , they are  apart. Determine the initial tension which must be increased by, to make the governor isochronous.

Question 5

Why is an offset provided in a radial cam-translating follower mechanism?

Question 6

In a single-cylinder reciprocating engine, the mass of reciprocating parts is 55 kg and the mass of revolving parts is 30 kg. The speed of the engine is 200 rpm and the stroke length is 300 mm. If 65 % of the reciprocating parts and all the revolving parts are to be balanced then the required balance mass at a radius of 270 mm is ___ kg.
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