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Theory of Machine

Theory of Machine
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is

2ωv
ωv
2ωv²
ω²v

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Theory of Machine
The motion between a pair which takes place in ____ is known as incompletely constrained motion.

Two directions only
One direction only
More than one direction
None of the listed here

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Theory of Machine
In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

None of these
Hammer blow
Tractive force
Swaying couple

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Theory of Machine
The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

ω₁.ω₂.r
(ω₁ - ω₂)2r
(ω₁ - ω₂)r
(ω₁ + ω₂)r

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Theory of Machine
Which of the following is an open pair?

Cam and follower
Ball and socket joint
Journal bearing
Lead screw and nut

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Theory of Machine
The primary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is

0° and 90°
180° and 360°
0° and 180°
90° and 180°

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