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Theory of Machine

Theory of Machine
The flank of the tooth is the surface of the tooth __________ the pitch surface.

Above
None of these
At
Below

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Theory of Machine
The power from the engine to the rear axle of an automobile is transmitted by means of

Bevel gears
Hooke's joint
Worm and worm wheel
Spur gears

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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

0.6
0.2
0.4
0.8

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Theory of Machine
Which of the below are inversions of slider crank mechanism?
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism

1, 3 and 4
1, 2 and 3
2, 3 and 4
1, 2 and 4

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

(1/2) μ W R
(3/4) μ W R
(2/3) μ W R
μ W R

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Theory of Machine
The component of the acceleration, parallel to the velocity of the particle, at the given instant is called

Coriolis component
Tangential component
None of these
Radial component

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