The necessary condition for forces to be in equilibrium is that these should be_____________________?

A. Coplanar
B. Meet at one point ;
C. Both a. and b. above
D. All be equal

If n = number of members andy = number of joints, then for a perfect frame, n =________________?

A. J-2
B. 2j-l
C. 2/-3
C. 3/-2

A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to_________________?

A. 25
B. 50
C. 100
D. 250

The C.G. of a solid hemisphere lies on the central radius 3r_________________?

A. At distance — from the plane base 3r
B. At distance — from the plane base 3r
C. At distance — from the plane base 3r
D. At distance — from the plane base or

The C.G. of a right circular solid cone of height h lies at the following distance from the base________________?

A. H/2
B. J/3
C. H/6
D. H/4

Which of the following is the example of lever of first order__________________?

A. Arm of MAN
B. Pair of scissors
C. Pair of clinical tongs
D. All of the above

A cable with a uniformly distributed load per horizontal metre run will take the following shape_________________?

A. Straight line
B. Parabola
C. Hyperbola
D. Elliptical

In actual machines_____________________?

A. Mechanical advantage is greater than velocity ratio
B. Mechanical advantage is equal to velocity ratio
C. Mechanical advantage is less than velocity ratio
D. Mechanical advantage is unity

A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly_______________?

A. 38 m
B. 62.5 m
C. 96 m
D. 124 m

The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of __________________?

A. Friction
B. Limiting friction
C. Repose
D. Kinematic friction