A. angle between normal reaction and the resultant of normal reaction and the limiting friction
B. ratio of limiting friction and normal reaction
C. the ratio of minimum friction force to the friction force acting when the body is just about to move
D. the ratio of minimum friction force to friction force acting when the body is in motion
E. ratio of static and dynamic friction
A. compression or tension
B. buckling or shear
C. shear or tension
D. all of the above
E. bending
A. concurrence of the medians
B. intersection of its altitudes
C. intersection of bisector of angles
D. intersection of diagonals
E. all of the above
A. two members with unknown forces of the frame
B. three members with unknown forces of the frame
C. four members with unknown forces of the frame
D. three members with known forces of the frame
E. four members with two known forces
A. 2n-3
B. n-l
C. ‘2n-l
D. n – 2
E. 3n-2.
where n = number of joints in a frame
A. coefficient of friction
B. angle of friction
C. angle of repose
D. sliding friction
E. friction resistance
A. towards the wall at its upper end
B. away from the wall at its upper end
C. upwards at its upper end
D. downwards at its upper end
E. none of the above
A. post friction
B. limiting friction
C. kinematic friction
D. frictional resistance
E. dynamic friction
A. balance each other
B. produce a couple and an unbalanced force
C. are equivalent
D. produce a moment of couple
E. can not balance each other
A. The C.G. of a circle is at its center
B. The C.G. of a triangle is at the intersection of its medians
C. The C.G. of a rectangle is at the inter-section of its diagonals
D. The C.G. of a semicircle is at a distance of r/2 from the center
E. The C-G. of an ellipse is at its center