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Theory of Machine

Theory of Machine
The number of links in pantograph mechanism is equal to

3
5
2
4

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Theory of Machine
The total number of instantaneous centers for a mechanism consisting of n links are

n(n - 1)/2
n - 1
n/2
n

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Theory of Machine
A kinematic chain is known as a mechanism when

Two of the links are fixed
None of these
One of the links is fixed
None of the links is fixed

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Theory of Machine
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

cosecφ
sinφ
cosφ
secφ

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Theory of Machine
The magnitude of linear velocity of a point B on a link AB relative to point A is, (Where ω = Angular velocity of the link AB)

ω × (AB)²
(ω × AB)²
ω × AB
ω² × AB

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Theory of Machine
In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as

None of these
Hammer blow
Swaying couple
Tractive force

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