Center of gravity of a solid cone lies on the axis at the height_______________?

A. One-fourth of the total height above base
B. One-third of the total height above base
C. One-half of the total height above base
D. Three-eighth of the total height above the base

In detennining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than___________________?

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

A framed structure is perfect if it contains members equal to________________?

A. 2n-3
B. N-l
C. ‘2n-l
D. N – 2

According to Lami’s theorem________________?

A. The three forces must be equal
B. The three forces must be at 120° to each other
C. The three forces must be in equilibrium
D. If the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two

D’ Alembert’s principle is used for___________________?

A. Reducing the problem of kinetics to equivalent statics problem
B. Determining stresses in the truss
C. Stability of floating bodies
D. Designing safe structures

Which of the following is not a vector quantity_______________?

A. Weight
B. Velocity
C. Acceleration
D. Force

A number of forces acting at a point will be in equilibrium if_________________?

A. Their total sum is zero
B. Two resolved parts in two directions at right angles are equal
C. Sum of resolved parts in any two per-pendicular directions are both zero
D. All of them are inclined equally

According to principle of transmissibility of forces, the effect of a force upon a body is_______________?

A. Maximum when it acts at the center of gravity of a body
B. Different at different points in its line of action
C. The same at every point in its line of action
D. Minimum when it acts at the c.g. of the body

When trying to turn a key into a lock, following is applied___________________?

A. coplanar force
B. non-coplanar forces
C. lever
D. moment

The weight of a body is due to____________________?

A. centripetal force of earth
B. gravitational pull exerted by the earth
C. forces experienced by body in atmos-phere
D. force of attraction experienced by par-ticles