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Theory of Machine

Theory of Machine
If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

180°
360°
0°
90°

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Theory of Machine
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to

Have perfect balancing
To start the locomotive quickly
Minimize the effect of secondary forces
Minimize the effect of primary forces

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Theory of Machine
The tendency of a body to resist change from rest or motion is known as

Friction
Inertia
Mass
Resisting force

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Theory of Machine
The frequency of oscillation of a torsional pendulum is

2πk/r. √(g/l)
2πr/k. √(g/l)
r/2πk. √(g/l)
r/2πk. √(l/g)

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Theory of Machine
Davis steering gear consists of

Rolling pairs
Turning pairs
Higher pairs
Sliding pairs

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Theory of Machine
In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as

Hammer blow
None of these
Tractive force
Swaying couple

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