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Theory of Machine

Theory of Machine
Peaucellier’s mechanism has

Twelve links
Six links
Eight links
Four links

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Theory of Machine
If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

90°
180°
0°
360°

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

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

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Theory of Machine
Tangential acceleration direction is

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

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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 minimum length of the coupler will be

Slightly more than 45 mm
Slightly less than 45 mm
95 mm
45 mm

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Theory of Machine
Which of the following has sliding motion?

Crank pin
Crank
Connecting rod
Cross-head

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