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Theory of Machine

Theory of Machine
The secondary unbalanced force is maximum __________ in one revolution of the crank.

Two times
Sixteen times
Four times
Eight times

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Theory of Machine
When the two elements of a pair have __________ when in motion, it is said to a lower pair.

None of these
Body contact
Surface contact
Line or point contact

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Theory of Machine
The two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as

Spiral gearing
Bevel gearing
Helical gearing
Spur gearing

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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

None of these
Radial component
Tangential component
Coriolis component

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Theory of Machine
Tangential acceleration direction is

Along the angular velocity
Perpendicular to angular velocity
Opposite to angular velocity
May be any one of these

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Theory of Machine
A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become

tp /4
4 tp
16 tp
tp /16

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