Strength of Materials
If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either

be all parallel
at least two of them must meet
All of the listed here
meet in a point

ANSWER DOWNLOAD EXAMIANS APP

Strength of Materials
Kinetic friction is the

Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction
The friction force acting when the body is just about to move
Ratio of limiting friction and normal reaction
The friction force acting when the body is in motion

ANSWER DOWNLOAD EXAMIANS APP