STRENGTH OF MATERIALS QUIZ

A single force and a couple acting in the same plane upon a rigid body

cannot balance each other

produce moment of a couple

are equivalent

balance each other

TRUE ANSWER : ?
YOUR ANSWER : ?

A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to

W

Wan(a-)

Wtan(a + <|))

W sin (a + $)

TRUE ANSWER : ?
YOUR ANSWER : ?

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

kinematic friction

repose

friction

limiting friction

TRUE ANSWER : ?
YOUR ANSWER : ?

Frictional force encountered after commencement of motion is called

dynamic friction

limiting friction

frictional resistance

post friction

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YOUR ANSWER : ?

Pick up wrong statement about friction force for dry surfaces. Friction force is

independent of the area of contact surfaces

proportional to velocity of sliding

proportional to normal load between the surfaces

dependent on the materials of contact surface

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a scalar quantity

volume

mass

acceleration

density

TRUE ANSWER : ?
YOUR ANSWER : ?

In the equation of virtual work, following force is neglected

reaction at a point or an axis, fixed in space, around which a body is con-strained to turn

reaction of any smooth surface with which the body is in contact

reaction of a rough surface of a body which rolls on it without slipping

All of the listed here

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

same

double

four times

half

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A force is completely defined when we specify

All of the listed here

direction

magnitude

point of application

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

be all parallel

meet in a point

at least two of them must meet

All of the listed here

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