Mechanical Engineering · all questions

Engineering Mechanics
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Q21

A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction.
Engineering Mechanics mcq question image

Engineering Mechanics mcq question image

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Q22

The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

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Q23

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

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Q24

The mechanical advantage of a lifting machine is the ratio of

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Q25

The efficiency of a lifting machine is the ratio of

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Q26

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

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Q27

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

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Q28

The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where, r = Amplitude of motion and y = Displacement of the particle from mean position.)

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Q29

If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

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Q30

The maximum height of a projectile on a horizontal plane, is

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Q31

The maximum frictional force which comes into play when a body just begins to slide over another surface is called

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Q32

A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

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Q33

The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

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Q34

Two bodies of masses m₁ and m₂ are hung from the ends of a rope, passing over a frictionless pulley as shown in the figure below. The acceleration of the string will be
Engineering Mechanics mcq question image

Engineering Mechanics mcq question image

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Q35

According to principle of transmissibility of forces, the effect of a force upon a body is

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Q36

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

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Q37

Which of the following are vector quantities?

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Q38

Which of the following are vector quantities?

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Q39

The C.G. of a right circular solid cone of height h lies at the following distance from the base

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Q40

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

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