Theory of Machine
In elliptical trammels

All four pairs are turning
One pair turning and three pairs sliding
Two pairs turning and two pairs sliding
Three pairs turning and one pair sliding

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if

The center of gravity of the two masses coincides with that of the body
All of these
The sum of the two masses is equal to the total mass of body
The sum of mass moment of inertia of the masses about their center of gravity is equal to the mass moment of inertia of the body

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
The inversion of a mechanism is

Obtained by fixing different links in a kinematic chain
Obtained by reversing the input and output motion
Turning its upside down
Changing of a higher pair to a lower pair

ANSWER DOWNLOAD EXAMIANS APP