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Theory of Machine

Theory of Machine
The brake commonly used in railway trains is

Shoe brake
Band brake
Band and block brake
Internal expanding brake

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

secφ
cosecφ
cosφ
sinφ

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Theory of Machine
Pulley in a belt drive acts as

Cylindrical pair
Sliding pair
Turning pair
Rolling pair

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Theory of Machine
A rigid body possesses ________degrees of freedom

Six
Four
One
Two

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Theory of Machine
The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at

The point on the circumference situated vertically opposite to the contact point
The center of the disc
An infinite distance on the plane surface
The point of contact

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Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

I₂/G
G.I₂
G².I₂
I₂/G²

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