ENGINEERING MECHANICS QUIZ

On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

Towards the wall at its upper end

Upwards at its upper end

Away from the wall at its upper end

Downwards at its upper end

TRUE ANSWER : ?
YOUR ANSWER : ?

The velocity ratio in case of an inclined plane inclined at angle 'θ' to the horizontal and weight being pulled up the inclined plane by vertical effort is

sinθ

cosθ

cosecθ

tanθ

TRUE ANSWER : ?
YOUR ANSWER : ?

The impact between two lead spheres is approximately equal to an __________ impact.

Inelastic

Elastic

Solid

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Static friction is always __________ dynamic friction.

None of these

Greater than

Equal to

Less than

TRUE ANSWER : ?
YOUR ANSWER : ?

Two forces are acting at an angle of 120°. The bigger force is 40 N and the resultant is perpendicular to the smaller one. The smaller force is

None of the listed here

40 N

120 N

20 N

TRUE ANSWER : ?
YOUR ANSWER : ?

The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplanar concurrent forces.

None of these

Either A or B

Do not lie

Lie

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of doing work is known as

Potential energy

Power

None of these

Kinetic energy

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit of angular acceleration is

N-m

m/s

m/s2

rad/s2

TRUE ANSWER : ?
YOUR ANSWER : ?

Moment of inertia is the

Second moment of force

Second moment of area

All of these

Second moment of mass

TRUE ANSWER : ?
YOUR ANSWER : ?

The centre of percussion is below the centre of gravity of the body and is at a distance equal to

h2/kG

h/kG

h × kG

kG2/h

TRUE ANSWER : ?
YOUR ANSWER : ?

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