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 13 of 26

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Q121.
The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia about its base, is

a.

1/4

b.

1/2

c.

3/4

d.

2.

Discuss
Answer: (a).1/4
Q122.
The apparent weight of a man in a moving lift is less than his real weight when it is going down with

a.

uniform speed

b.

an acceleration

c.

linear momentum

d.

retardation.

Discuss
Answer: (b).an acceleration
Q123.
P is the force acting on a body whose mass is m and acceleration is f. The equation P - mf = 0, is known as

a.

equation of dynamics

b.

equation of dynamic equilibrium

c.

equation of statics

d.

none of these.

Discuss
Answer: (a).equation of dynamics
Q124.
Pick up the incorrect statement from the following :

a.

The C.G. of a circle is at its centre

b.

The C.G. of a triangle is at the intersecton of its medians

c.

The C.G. of a rectangle is at the intersection of its diagonals

d.

The C.G. of a semicircle is at a distance of r/2 from the centre

Discuss
Answer: (d).The C.G. of a semicircle is at a distance of r/2 from the centre
Q125.
A 49 kg lady stands on a spring scale in an elevator. During the first 5 sec, starting from rest, the scale reads 69 kg. The velocity of the elevator will be

a.

10 m/sec

b.

15 m/sec

c.

20 m/sec

d.

25 m/sec.

Discuss
Answer: (c).20 m/sec
Q126.
Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down

a.

rubber and lead balls undergo equal changes in momentum

b.

change in momentum suffered by lead ball is less that of rubber ball

c.

momentum of rubber ball is less than that of lead ball

d.

none of these.

Discuss
Answer: (d).none of these.
Q127.
The instantaneous centre of a member lies at the point of intersection of two lines drawn at the ends of the member such that the lines are inclined to the direction of motion of the ends at

a.

30°

b.

45°

c.

60°

d.

90°

Discuss
Answer: (d).90°
Q128.
A rod 5 m in length is moving in a vertical plane. When it is inclined at 60° to horizontal, its lower end is moving horizontally at √3 m/sec and upper end is moving in vertical direction. The velocity of its upper end, is

a.

0.5 m/sec

b.

1.0 m/sec

c.

1.5 m/sec

d.

2.5 m/sec

Discuss
Answer: (b).1.0 m/sec
Q129.
The units of inertia of mass, are

a.

kg/m

b.

kg/m²

c.

m⁴

d.

kg-m².

Discuss
Answer: (d).kg-m².
Q130.
A sphere is resting on two planes BA and BC which are inclined at 45° and 60° respectively with the horizontal. The reaction on the plane BA will be

a.

less than that on BC

b.

more than that of BC

c.

equal to that on BC

d.

zero

Discuss
Answer: (b).more than that of BC
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