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Theory of Machine

Theory of Machine
The lower pair is a

Point contact pair
Sliding pair
Open pair
Closed pair

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Theory of Machine
The centre of gravity of a coupler link in a four bar mechanism will experience

Both linear and angular acceleration
No acceleration
Only linear acceleration
Only angular acceleration

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Theory of Machine
The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

ω² × OQ
ω² × OQ sinθ
ω² × OQ tanθ
ω² × OQ cosθ

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Theory of Machine
The example of rolling pair is

Bolt and nut
Ball bearing and roller bearing
Ball and socket joint
Lead screw of a lathe

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Theory of Machine
In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from

70°- 80°
80°- 90°
50°- 60°
60°-70°

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Theory of Machine
For the same lift and same angle of ascent, a smaller base circle will give

There is no such relation with pressure angle
A large value of pressure angle
A small value of pressure angle
Something else

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MORE MCQ ON Theory of Machine

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