STRENGTH OF MATERIALS QUIZ

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

(d)3/-2

(b)2j-l

j-2

2/-3

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

Wan(a-)

W

W sin (a + $)

Wtan(a + <|))

TRUE ANSWER : ?
YOUR ANSWER : ?

A force acting on a body may

change its motion

All of the listed here

introduce internal stresses

retard its motion

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The weight of a body is due to

gravitational force of attraction towards the centre of the earth.

gravitational pull exerted by the earth

force of attraction experienced by par-ticles

centripetal force of earth

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YOUR ANSWER : ?

Two non-collinear parallel equal forces acting in opposite direction

balance each other

constitute a couple

constitute a moment of couple

constitute a moment

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

equilateral triangle

square

right angled triangle

circle

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YOUR ANSWER : ?

Effect of a force on a body depends upon

All of the listed here

magnitude

direction

position or line of action

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YOUR ANSWER : ?

The effort required to lift a load W on a screw jack with helix angle a and angle of friction<="" div="">

Wtan(a + <)>)

Wcos(a + )

Wtan(a-<)>)

Wsin(a + <(>)

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YOUR ANSWER : ?

If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be

Maximum

Infinity

Minimum

Zero

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YOUR ANSWER : ?

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

hyperbola

ellipse

circle

parabola

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YOUR ANSWER : ?

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