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Theory of Machine

Theory of Machine
The tendency of a body to resist change from rest or motion is known as

Resisting force
Friction
Mass
Inertia

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Theory of Machine
The relative velocity of B with respect to A in a rigid link AB is

At 45° to AB
Along AB
Perpendicular to AB
Parallel to AB

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Theory of Machine
Which one of the following is an exact straight line mechanism using lower pairs?

Peaucellier’s mechanism
Watt’s mechanism
Grasshopper mechanism
Robert’s mechanism

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Theory of Machine
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

ω². (r₁ r₂). (1 - cos² θ)
ω². (r₁ - r₂). (1 - sin² θ)
ω². (r₁ + r₂). (1 + cos² θ)
ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]

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

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Theory of Machine
With usual notations for different parameters involved, the maximum fluctuations of energy for a flywheel is given by

EC S/2
2ECS²
2ECS
2E²CS

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