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Theory of Machine

Theory of Machine
An automobile steering gear is an example of

Higher pair
Rolling pair
Sliding pair
Lower pair

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Theory of Machine
Which of the following would constitute a link?

Piston rod and cross head
Piston, piston rod and cross head
Piston and piston rod
Piston, crank pin and crank shaft

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Theory of Machine
A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

P = W (cos α + μ sin α)
P = W (sin α + μ cos α)
P = W tan α
P = W tan (α + φ)

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Theory of Machine
Longitudinal vibrations are said to occur when the particles of a body moves

Perpendicular to its axis
None of these
In a circle about its axis
Parallel to its axis

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Theory of Machine
When a slider moves on a fixed link having curved surface, their instantaneous centre lies

On their point of contact
At the centre of curvature
At the centre of circle
At the pin joint

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Theory of Machine
The mechanism forms a structure, when the number of degrees of freedom (n) is equal to

1
-1
2

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