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Theory of Machine

Theory of Machine
The brake commonly used in railway trains is

Band brake
Band and block brake
Internal expanding brake
Shoe brake

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Theory of Machine
In order to double the period of a simple pendulum, the length of the string should be

Doubled
None of these
Quadrupled
Halved

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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
ω² × AB
ω × AB

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Theory of Machine
Tangential acceleration direction is

May be any one of these
Opposite to angular velocity
Perpendicular to angular velocity
Along the angular velocity

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Theory of Machine
Rectilinear motion of piston is converted into rotary by

Gudgeon pin
Slider crank
Connecting rod
Cross head

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Theory of Machine
Which of the following mechanism is obtained from lower pair?

All of these
Gyroscope
Valve and valve gears
Pantograph

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