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Theory of Machine

Theory of Machine
In vibration isolation system, if ω/ωn > 1, then the phase difference between the transmitted force and the disturbing force is

270°
0°
180°
90°

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Theory of Machine
The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as

Damping coefficient
Damping factor
Logarithmic decrement
Magnification factor

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Theory of Machine
The centre of gravity of a coupler link in a four bar mechanism will experience

No acceleration
Only linear acceleration
Both linear and angular acceleration
Only angular acceleration

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Theory of Machine
What is the number of instantaneous centers for an eight link mechanism?

15
8
28
30

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Theory of Machine
Davis steering gear consists of

Turning pairs
Higher pairs
Rolling pairs
Sliding pairs

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Theory of Machine
To obviate axial thrust, following gear drive is used

Mutter gears
Single helical gear in which one of the teeth of helix angle a is more
Double helical gears having opposite teeth
Double helical gears having identical teeth

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