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Theory of Machine

Theory of Machine
The lead screw of a lathe with nut forms a

Turning pair
Rolling pair
Sliding pair
Screw pair

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Theory of Machine
In a spring controlled governor, when the controlling force ____ as the radius of rotation increases, it is said to be a stable governor.

None of the listed here
Decreases
Increases
Remains constant

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Theory of Machine
A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is

3
5
4
2

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Theory of Machine
When there is a reduction in amplitude over every cycle of vibration, then the body is said to have

Damped vibration
Free vibration
Forced vibration
Under damped vibration

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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

G².I₂
G.I₂
I₂/G²
I₂/G

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Theory of Machine
For a kinematic chain to be considered as mechanism

One link should be fixed
None of the links should be fixed
Two links should be fixed
There is no such criterion

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