12 NOVEMBER 2021 CURRENT AFFAIRS QUIZ

Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

Four times

Nine times

Two times

Six times

TRUE ANSWER : ?
YOUR ANSWER : ?

A smooth cylinder lying on a __________ is in neutral equilibrium.

Convex surface

Horizontal surface

None of these

Curved surface

TRUE ANSWER : ?
YOUR ANSWER : ?

A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act

Away from the wall at its upper end

Upward at its upper end

Downward at its upper end

Towards the wall at its upper end

TRUE ANSWER : ?
YOUR ANSWER : ?

The term 'Centroid' is

The point of suspension

The same as centre of gravity

The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Coplanar concurrent forces are those forces which

Do not meet at one point, but their lines of action lie on the same plane

Meet at one point and their lines of action also lie on the same plane

Do not meet at one point and their lines of action do not lie on the same plane

Meet at one point, but their lines of action do not lie on the same plane

TRUE ANSWER : ?
YOUR ANSWER : ?

When a body of mass 'm' attains a velocity 'v' from rest in time 't', then the kinetic energy of translation is

mv2

0.5 mgv2

0.5 mv2

mgv2

TRUE ANSWER : ?
YOUR ANSWER : ?

The angle between two forces when the resultant is maximum and minimum respectively are

90° and 180°

180° and 0°

90° and 0°

0° and 180°

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)

All of these

s = u.t + ½ a.t2

v2 = u2 + 2a.s

v = u + a.t

TRUE ANSWER : ?
YOUR ANSWER : ?

In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.

Less than

None of these

More than

Equal to

TRUE ANSWER : ?
YOUR ANSWER : ?

One kg force is equal to

7.8 N

9.8 N

12 N

8.9 N

TRUE ANSWER : ?
YOUR ANSWER : ?