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Theory of Machine

Theory of Machine
Typewriter constitutes

Machine
Structure
Mechanism
Inversion

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Theory of Machine
When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.

Increases
Remains constant
None of these
Decreases

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Theory of Machine
A cam with a roller follower would constitute following type of pair

Lower pair
Open pair
Close pair
Higher pair

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Theory of Machine
A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a

Structure
Mechanism
Inversion
Kinematic chain

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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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Theory of Machine
The main disadvantage of the sliding pair is that it is

Difficult to manufacture
Bulky
Both (A) and (B) above
Wears rapidly

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