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Theory of Machine

Theory of Machine
Typewriter constitutes

Machine
Inversion
Mechanism
Structure

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Theory of Machine
The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

None of these
Unpredictable
Different
Same

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Theory of Machine
Which of the following is a turning pair?

Piston and cylinder of a reciprocating steam engine
Shaft with collars at both ends fitted into a circular hole
Ball and a socket joint
Lead screw of a lathe with nut

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Theory of Machine
The periodic time is given by (where ω = Angular velocity of the particle in rad/s)

2π/ω
π/ω
ω × 2π
ω/2π

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Theory of Machine
Relationship between the number of links (L) and number of pairs (P) is

P = 2L - 4
P = 2L + 2
P = 2L + 4
P = 2L - 2

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Theory of Machine
An exact straight line motion mechanism is a

Scott-Russell's mechanism
Hart's mechanism
All of these
Peaucellier's mechanism

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