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Theory of Machine

Theory of Machine
Typewriter constitutes

Mechanism
Structure
Inversion
Machine

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Theory of Machine
In multi V-belt transmission, if one of the belt is broken, we have to change the

Broken belt and its adjacent belts
All the belts
There is no need of changing any one as remaining belts can take care of transmission of load
Broken belt

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Theory of Machine
A pulley and belt in a belt drive form a

Cylindrical pair
Sliding pair
Rolling pair
Turning pair

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Theory of Machine
A disturbing mass m₁ attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii of rotation of m₁ and m₂ respectively)

m₁ r₁ = m₂ r₂
m₁ r₂ = m₂ r₁
None of these
m₁ m₂ = r₁ r₂

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Theory of Machine
A system in dynamic balance implies that

The system is also statically balanced
There is no critical speed in the system
There will absolutely no wear of bearings
The system is critically damped

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Theory of Machine
Which type of gear train is used in clock mechanism to join hour hand and minute hand?

Epicyclic gear train
Simple gear train
Compound gear train
Reverted gear train

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