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Theory of Machine

Theory of Machine
An automobile steering gear is an example of

Higher pair
Sliding pair
Lower pair
Rolling pair

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Theory of Machine
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is

Chain coupling
Flexible coupling
Universal coupling
Oldham's coupling

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Theory of Machine
The periodic time is given by (where ω = Angular velocity of the particle in rad/s)

2π/ω
π/ω
ω × 2π
ω/2π

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

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

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Theory of Machine
The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve)

M/(m + M)
(m + M)/M
(m + M)/m
m/(m + M)

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Theory of Machine
Sense of tangential acceleration of a link

Is perpendicular to that of velocity
Could be either same or opposite to velocity
Is opposite to that of velocity
Is same as that of velocity

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