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Strength of Materials

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

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
E. one fourth

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

Strength of Materials

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 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
E. none of the above

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__________________? Read More »

Strength of Materials

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_______________?

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
E. none of the above

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_______________? Read More »

Strength of Materials

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

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
E. none of the above

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

Strength of Materials

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

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
E. none of the above

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

Strength of Materials

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

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
E. none of the above

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

Strength of Materials

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

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
E. none of the above

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

Strength of Materials