## Theory of Machine Which of the following statement is correct as regard to the difference between a machine and a structure?

All of these
A machine transforms the available energy into some useful work, whereas in a structure no energy is transformed into useful work
The links of a machine may transmit both power and motion, whereas the members of a structure transmit forces only
The parts of a machine move relative to one another, whereas the members of a structure do not move relative to one another

## Theory of Machine The Coriolis component of acceleration exists whenever a point moves along a path that has

Rotational motion
Gravitational acceleration
Linear displacement
Tangential acceleration

(r/2) cosφ
r cosφ
r tanφ
r sinφ

## Theory of Machine In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to

To start the locomotive quickly
Have perfect balancing
Minimize the effect of primary forces
Minimize the effect of secondary forces

## Theory of Machine When two links are connected by a pin joint, their instantaneous center lies

At the center of curvature
On their point of contact
At the center of circle
At the pin joint

None of these
Unpredictable
Same
Different