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Theory of Machine

Theory of Machine
Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is

10
34
30
20

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Theory of Machine
The power of a Porter governor is equal to

[2c²/(1 + 2c)] (m + M) g.h
[4c²/(1 + 2c)] (m + M) g.h
[3c²/(1 + 2c)] (m + M) g.h
[c²/(1 + 2c)] (m + M) g.h

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

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

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Theory of Machine
A cam with a roller follower would constitute following type of pair

Lower pair
Close pair
Open pair
Higher pair

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Theory of Machine
A chain comprises of 5 links having 5 joints. Is it kinematic chain?

It is a marginal case
Data are insufficient to determine it
Yes
No

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Theory of Machine
Which of the following is a higher pair?

Sliding pair
Screw pair
Belt and pulley
Turning pair

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