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Theory of Machine

Theory of Machine
The periodic time of one oscillation for a simple pendulum is

2π. √(l/g)
2π. √(g/l)
(1/2π). √(g/l)
(1/2π). √(l/g)

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Theory of Machine
If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

2
1.5
1
0.5

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Theory of Machine
________ is an inversion of Double slider crank chain.

Reciprocating engine
Coupling rod of a locomotive
Scotch yoke mechanism
Hand pump

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Theory of Machine
Which of the following mechanisms produces mathematically an exact straight line motion?

Tchebicheff mechanism
Grasshopper mechanism
Peaucellier's mechanism
Watt mechanism

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Theory of Machine
A kinematic chain is known as a mechanism when

None of these
None of the links is fixed
Two of the links are fixed
One of the links is fixed

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Theory of Machine
The example of successfully constrained motion is a

Motion of the shaft between a footstep bearing
Motion of an I.C. engine valve
Piston reciprocating inside an engine cylinder
All of these

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