STRENGTH OF MATERIALS QUIZ

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

Wsin(a + <(>)

Wtan(a + <)>)

Wtan(a-<)>)

Wcos(a + )

TRUE ANSWER : ?
YOUR ANSWER : ?

Center of gravity of a solid cone lies on the axis at the height

three-eighth of the total height above the base

one-half of the total height above base

one-third of the total height above base

one-fourth of the total height above base

TRUE ANSWER : ?
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

Zero

Minimum

Maximum

Infinity

TRUE ANSWER : ?
YOUR ANSWER : ?

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

density of metal can’t be determined

metal is twice as dense as water

metal is twice as dense as unknown fluid

metal will float in water

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the example of lever of first order?

Arm of man

All of the listed here

Pair of clinical tongs

Pair of scissors

TRUE ANSWER : ?
YOUR ANSWER : ?

When trying to turn a key into a lock, following is applied

coplanar force

moment

non-coplanar forces

couple

TRUE ANSWER : ?
YOUR ANSWER : ?

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction

along the plane

horizontally

vertically

at an angle equal to the angle of friction to the inclined plane

TRUE ANSWER : ?
YOUR ANSWER : ?

If three forces acting in different planes can be represented by a triangle, these will be in

unpredictable

partial equilibrium

non-equilibrium

full equilibrium

TRUE ANSWER : ?
YOUR ANSWER : ?

A force acting on a body may

introduce internal stresses

retard its motion

All of the listed here

change its motion

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Sum of resolved parts in any two perpendicular directions are both zero

Their total sum is zero

Two resolved parts in two directions at right angles are equal

All of them are inclined equally

TRUE ANSWER : ?
YOUR ANSWER : ?