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Theory of Machine

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
0.4
0.6
0.8

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Theory of Machine
If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

Unstable
Stable
Isochronous
None of the listed here

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Theory of Machine
In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

None of these
Lead
Steam lap
Exhaust lap

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Theory of Machine
In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)

Greater than unity
Zero
Less than unity
Equal to unity

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

Cam and follower
Ball and socket i
Both (A) and (B) above
Piston and cylinder

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Theory of Machine
Klein's construction can be used to determine acceleration of various parts when the crank is at

Right angles to the link of the stroke
Outer dead centre
All of the listed here
Inner dead centre

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