ENGINEERING MECHANICS QUIZ

The time of flight of a projectile on downward inclined plane depends upon

Angle of projection

None of these

Angle of inclination of the plane

Both (A) and (B)

TRUE ANSWER : ?
YOUR ANSWER : ?

The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

D/(D + d)

2D/(D + d)

2D/(D - d)

D/(D - d)

TRUE ANSWER : ?
YOUR ANSWER : ?

The acceleration of a particle moving with simple harmonic motion, at any instant is given by

ω2/y

ω2.y

ω.y

ω3.y

TRUE ANSWER : ?
YOUR ANSWER : ?

According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG / Ah2

IP = IG + Ah2

IP = IG - Ah2

IP = Ah2 / IG

TRUE ANSWER : ?
YOUR ANSWER : ?

The horizontal range of a projectile (R) is given by

R = u² sinα/g

R = u² cosα/g

R = u² cos2α/g

R = u² sin2α/g

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

Elastic

Inelastic

Solid

TRUE ANSWER : ?
YOUR ANSWER : ?

When the spring of a watch is wound, it will possess

Kinetic energy

Electrical energy

Strain energy

Heat energy

TRUE ANSWER : ?
YOUR ANSWER : ?

Static friction is always __________ dynamic friction.

Less than

None of these

Greater than

Equal to

TRUE ANSWER : ?
YOUR ANSWER : ?

Coefficient of friction depends upon

None of these

Both (A) and (B)

Area of contact only

Nature of surface only

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Work done is said to be zero, when

None of these

Some force acts on a body, but displacement is zero

Either (A) or (B)

No force acts on a body but some displacement takes place

TRUE ANSWER : ?
YOUR ANSWER : ?

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