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Theory of Machine

Theory of Machine
The secondary unbalanced force is __________ the primary unbalanced force.

Two-third
One-half
1/n times
n times

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Theory of Machine
In a kinematic chain, a quaternary joint is equivalent to

Two binary joints
Four binary joints
Three binary joints
One binary joint

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Theory of Machine
Which of the following mechanism is an approximate straight line motion mechanism?

Grasshopper mechanism
Robert's mechanism
Watt's mechanism
All of these

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Theory of Machine
The relation between number of links (l) and number of joints (j) in a kinematic chain is

l = j + 4
l = (1/2).(j + 2)
l = (2/3).(j + 2)
l = (3/4).(j + 3)

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Theory of Machine
In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

Could change or remain unaltered depending on which link is fixed
Will remain same
Will change
Will not occur

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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

4 tp
tp /16
tp /4
16 tp

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