Related Questions

In a drag link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is
A equal to sum of other two
B greater than sum of other two
C less than sum of other two
D none of the mentioned
When a slider moves on a fixed link having curved surface, their instantaneous centre lies
A on their point of contact
B at the centre of curvature
C at the centre of circle
D at the pin joint
What is the number of instantaneous centers for an eight link mechanism?
A 15
B 28
C 30
D 8
When two links are connected by a pin joint, their instantaneous center lies
A On their point of contact
B At the center of curvature
C At the center of circle
D At the pin joint
The centre of gravity of a coupler link in a four bar mechanism will experience
A no acceleration
B only linear acceleration
C only angular acceleration
D both linear and angular acceleration
In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links
A will remain same
B will change
C will not occur
D none of the mentioned
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is
A Along PO
B Perpendicular to PO
C At 45° to PO
D None of the above
When a bar of length '$$l$$' and diameter 'd' is rigidly fixed at the upper end and hanging freely, then the total elongation produced in the bar due to its own weight is (where w = Weight per unit volume of the bar)
A $$\frac{{{\text{w}}l}}{{2{\text{E}}}}$$
B $$\frac{{{\text{w}}{l^2}}}{{2{\text{E}}}}$$
C $$\frac{{{\text{w}}{l^3}}}{{2{\text{E}}}}$$
D $$\frac{{{\text{w}}{l^4}}}{{2{\text{E}}}}$$
Which of the following property of the instantaneous center is correct?
A A rigid link rotates instantaneously relative to another link at the instantaneous centre for the configuration of the mechanism considered.
B The two rigid links have no linear velocity relative to each other at the instantaneous centre.
C The velocity of the instantaneous centre relative to any third link is same whether the instantaneous centre is regarded as a point on the first link or on the second rigid link.
D all of the mentioned
The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at
A the centre of the disc
B the point of contact
C an infinite distance on the plane surface
D the point on the circumference situated vertically opposite to the contact point

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