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Theory of Machine

Theory of Machine
Peaucellier’s mechanism has

Four links
Twelve links
Eight links
Six links

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Theory of Machine
A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become

16 tp
tp /4
4 tp
tp /16

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Theory of Machine
In a system subjected to damped forced vibrations, the ratio of maximum displacement to the static deflection is known as

Damping factor
Logarithmic decrement
Magnification factor
Critical damping ratio

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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
None of the listed here
More than one direction

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Theory of Machine
The C.G. of a link in any mechanism would experience

No acceleration
Both angular and linear accelerations
Angular acceleration
Linear acceleration

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Theory of Machine
The method of direct and reverse cranks is used in engines for

Kinematic analysis
The control of speed fluctuations
Balancing of forces and couples
Vibration analysis

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