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Theory of Machine

Theory of Machine
Cross head and guides form a

Turning pair
Sliding pair
Higher pair
Lower pair

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Theory of Machine
What is the number of instantaneous centers for an eight link mechanism?

15
28
8
30

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Theory of Machine
The ratio of the number of teeth to the pitch circle diameter in millimeters, is called

None of these
Circular pitch
Diametral pitch
Module

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Theory of Machine
The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where l = Number of links, and j = Number of binary joints)

n = 4(l - 1) - 3j
n = 2(l - 1) - 2j
n = (l -1) - j
n = 3(l - 1) - 2j

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Theory of Machine
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

Governor B is more sensitive than governor A
Governor A is more sensitive than governor B
None of these
Both governors A and B are equally sensitive

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

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

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