Applied Mechanics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Applied Mechanics, a fundamental topic in the field of Civil Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Applied Mechanics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Applied Mechanics mcq questions that explore various aspects of Applied Mechanics problems. Each MCQ is crafted to challenge your understanding of Applied Mechanics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Civil Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Applied Mechanics MCQs are your pathway to success in mastering this essential Civil Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Applied Mechanics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Applied Mechanics knowledge to the test? Let's get started with our carefully curated MCQs!

Applied Mechanics MCQs | Page 10 of 26

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Q91.
The following statement is one of the laws of Dynamic friction

a.

The force of friction always acts in a direction opposite to that in which a body is moving

b.

The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction

c.

For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed

d.

all the above.

Discuss
Answer: (d).all the above.
Q92.
A 50 kg boy climbs up a 8 m rope in gymnasiam in 10 sec. The average power developed by the boy is approximately

a.

400 watts

b.

500 watts

c.

4000 watts

d.

none of these.

Discuss
Answer: (a).400 watts
Q93.
According to Law of Triangle of Forces

a.

three forces acting at a point, can be rep-resented by the sides of a triangle, each side being in proportion to the force

b.

three forces acting along the sides of a triangle are always in equilibrium

c.

if three forces acting on a, point can be represented.in magnitude and direction, by the sides of a triangle taken in order, these will be in equilibrium

d.

if the forces acting on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant will be represented in magnitude and direction by the third side of the triangle, taken in opposite order.

Discuss
Answer: (d).if the forces acting on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant will be represented in magnitude and direction by the third side of the triangle, taken in opposite order.
Q94.
A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length

a.

must be decreased

b.

must be increased

c.

is not changed but weight of the bob is increased

d.

is not changed but weight of the bob is decreased

Discuss
Answer: (b).must be increased
Q95.
The following is not a law of static friction :

a.

The force of friction always acts in a direction opposite to that in which the body tends to move

b.

The force of friction is dependent upon the area of contact

c.

The force of friction depends upon the roughness of the surface

d.

The magnitude of the limiting friction bears a constant ratio to the normal reaction between two surfaces.

Discuss
Answer: (a).The force of friction always acts in a direction opposite to that in which the body tends to move
Q96.
The velocity of a moving body, is

a.

a vector quantity

b.

a scalar quantity

c.

a scalar as well as a vector quantity

d.

none of these.

Discuss
Answer: (a).a vector quantity
Q97.
The resultant of the forces acting on a body will be zero if the body

a.

rotates

b.

moves with variable velocity in a straight line

c.

moves along a curved path

d.

does not move at all.

Discuss
Answer: (d).does not move at all.
Q98.
A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be

a.

0.5 m/sec

b.

1.5 m/sec

c.

2.5 m/sec

d.

3.5 m/sec

Discuss
Answer: (c).2.5 m/sec
Q99.
A pilot flies a small plane in a vertical loop of radius r. At the top of its trajectory he experiences weightlessness. If the acceleration due to gravity is g, the speed of the plane at the top of its trajectory would be

a.

zero

b.

infinite

c.

√gr

d.

√2gr

Discuss
Answer: (c).√gr
Q100.
A Seconds pendulum executes

a.

0.5 beat per second

b.

1.0 beat per second

c.

2.0 beats per second

d.

2.5 beats per second

Discuss
Answer: (c).2.0 beats per second
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