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Theory of Machine

Theory of Machine
What is the number of instantaneous centers for an eight link mechanism?

28
8
30
15

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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.

Body contact
None of these
Line or point contact
Surface contact

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Theory of Machine
If there are L number of links in a mechanism, then number of possible inversions is equal to

L + 2
L + 1
L
L - 1

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Theory of Machine
Which of the following is an inversion of a single slider crank chain?

Oscillating cylinder engine
Rotary internal combustion engine
Pendulum pump
All of these

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Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Spherical pair
Screw pair
Turning pair
Sliding pair

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Theory of Machine
A pantograph is a mechanism with

Lower pairs
Turning pairs
Higher pairs
Rolling pairs

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