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Theory of Machine

Theory of Machine
A cam with a roller follower would constitute following type of pair

Open pair
Close pair
Lower pair
Higher pair

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Theory of Machine
When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be

ω² r {(n + 1)/n}
ω² r {(n - 1)/n}
ω² r {n/(n - 1)}
ω² r {n/(n + 1)}

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Theory of Machine
Transmission angle is the angle between

Input link and fixed link
Input link and coupler
Output link and fixed link
Output link and coupler

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Theory of Machine
The Klein's diagram is useful to find

Angular acceleration of various parts
Velocity of various parts
Acceleration of various parts
Displacement of various parts

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

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

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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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