In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

Slightly less than 95 mm

95 mm

45 mm

Slightly more than 95 mm

Slightly less than 95 mm

95 mm

45 mm

Slightly more than 95 mm

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Theory of Machine
The example of spherical pair is

Bolt and nut

Lead screw of a lathe

Ball bearing and roller bearing

Ball and socket joint

Bolt and nut

Lead screw of a lathe

Ball bearing and roller bearing

Ball and socket joint

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Theory of Machine
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

Joining the corresponding points

Not possible to determine with these data

Perpendicular to line as per (A)

At 45° to line as per (A)

Joining the corresponding points

Not possible to determine with these data

Perpendicular to line as per (A)

At 45° to line as per (A)

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Theory of Machine
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

Below the origin

Above the origin

Any one of these

At the origin

Below the origin

Above the origin

Any one of these

At the origin

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Theory of Machine
The total number of instantaneous centers for a mechanism consisting of n links are

n

n - 1

n(n - 1)/2

n/2

n

n - 1

n(n - 1)/2

n/2

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Theory of Machine
In gears, interference takes place when

Gears do not move smoothly in the absence of lubrication

Pitch of the gears is not same

Gear teeth are undercut

The tip of a tooth of a mating gear digs into the portion between base and root circles

Gears do not move smoothly in the absence of lubrication

Pitch of the gears is not same

Gear teeth are undercut

The tip of a tooth of a mating gear digs into the portion between base and root circles

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Theory of Machine

Theory of Machine The example of spherical pair is

Theory of Machine The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

Theory of Machine A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

Theory of Machine The total number of instantaneous centers for a mechanism consisting of n links are

Theory of Machine In gears, interference takes place when

Theory of Machine
The example of spherical pair is

Theory of Machine
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

Theory of Machine
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

Theory of Machine
The total number of instantaneous centers for a mechanism consisting of n links are

Theory of Machine
In gears, interference takes place when