The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is________________?

A. Same
B. Double
C. Half
D. Four times

The C.G. of a plane lamina will not be at its geometrical centre in the case of a __________________?

A. Right angled triangle
B. Equilateral triangle
C. Square
D. Circle

A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal__________________?

A. Density of metal can’t be determined
B. Metal is twice as dense as water
C. Metal will float in water
D. Metal is twice as dense as unknown fluid

Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one_______________?

A. Ellipse
B. Hyperbola
C. Parabola
D. Circle

The co-efficient of friction depends upon _________________?

A. Nature of surfaces
B. Area of contact
C. Shape of the surfaces
D. Ail of the above.

If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either___________________?

A. Meet in a point
B. Be all parallel
C. At least two of them must meet
D. All the above are correct

The algebraic sum of moments of the forces forming couple about any point in their plane is__________________?

A. Equal to the moment of the couple
B. Constant
C. Both of above are correct
D. Both of above are wrong

Dynamic friction as compared to static friction is __________________?

A. Same
B. More
C. Less
D. May be less of more depending on nature of surfaces and velocity

If rain is falling in the opposite direction of the movement of a pedestrain, he has to hold his umbrella ________________________?

A. More inclined when moving
B. Less inclined when moving
C. More inclined when standing
D. Less inclined when standing

In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be____________________?

A. Increase key length
B. Increase key depth
C. Increase key width
D. Double all the dimensions