The following list of statements is given:
1) Grashoff’s rule states that for a planar crank-rocker 4-bar mechanism, the sum of the shortest and longest link lengths cannot be less than the sum of the remaining two link lengths.
2) Inversions of a mechanism are created by fixing different links, one at a time.
3) Geneva mechanism is an intermittent motion device.
4) Grubler’s criterion assumes mobility of a planar mechanism to be one.

The number of correct statements in the above list is

A mechanism has 8 links, out of which 5 are binary, 2 are ternary and 1 is quaternary. The number of instantaneous centres of rotation will be

In a dynamically equivalent system, a uniformly distributed mass is divided into

A crank and slotted lever mechanism used in a shaper has a centre distance of 300 mm between the centre of oscillation of the slotted lever and the centre of rotation of the crank. The radius of the crank is 120 mm. Find the ratio of the time of cutting to the time of return stroke.

The magnitude of velocities of the points on a rigid link is directly proportional to the distances from the points to the instantaneous centre.

The velocity of the instantaneous centre relative to any third rigid link will be different.

When the pin connects one sliding member and the other turning member, the angular velocity of the sliding member is __________

In a slider crank mechanism, the velocity of piston becomes maximum when

What is the purpose of double hooke’s joint?

Double hooke’s joint can be used to keep the angular velocity of the shaft constant.

Two shafts having an included angle of 150° are connected by a Hooke’s joint. The driving shaft runs at a uniform speed of 1500 r.p.m. The driven shaft carries a flywheel of mass 12 kg and 100 mm radius of gyration. Using the above data, calculate the maximum angular acceleration of the driven shaft in rad/s².