ENGINEERING MECHANICS QUIZ

The matter contained in a body, is called

Impulsive force

Momentum

Weight

Mass

TRUE ANSWER : ?
YOUR ANSWER : ?

The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)

1/2π. √(gh/kG² + h²)

1/2π. √(kG² + h²/gh)

2π. √(gh/kG² + h²)

2π. √(kG² + h²/gh)

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum efficiency of a lifting machine is

m/V.R.

1/(m × V.R.)

V.R./m

1/m

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YOUR ANSWER : ?

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

ω2.y

ω.y

ω3.y

ω2/y

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YOUR ANSWER : ?

Non-coplanar non-concurrent forces are those forces which

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

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

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

None of these

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YOUR ANSWER : ?

If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

90°

60°

120°

30°

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YOUR ANSWER : ?

The moment of inertia of a solid cylinder of mass 'm', radius 'r' and length 'l' about the longitudinal axis or polar axis is

mr²/6

mr²/8

mr²/4

mr²/2

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YOUR ANSWER : ?

The coefficient of friction depends upon

All of these

Area of contact

Shape of the surfaces

Nature of surfaces

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If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

g/2

None of these

g/3

g/4

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If n = number of members and y = number of joints, then for a perfect frame, n = ?

43892

43832

43865

43864

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YOUR ANSWER : ?