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Theory of Machine

Theory of Machine
Typewriter constitutes

Mechanism
Machine
Inversion
Structure

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Theory of Machine
The advantage of the piston valve over the slide valve is that in the former case

Power absorbed is less
The pressure developed being high provides tight sealing
Wear is less
Both wear and power absorbed are low

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Theory of Machine
Which of the following has sliding motion?

Cross-head
Crank pin
Crank
Connecting rod

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Theory of Machine
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to

0.2
0.6
0.4
0.8

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Theory of Machine
A foot step bearing and rotor of a vertical turbine form examples of

Partially constrained motion
Successfully constrained motion
Completely constrained motion
Incompletely constrained motion

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

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

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