Materials Strength MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Materials Strength, 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 Materials Strength 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 Materials Strength mcq questions that explore various aspects of Materials Strength problems. Each MCQ is crafted to challenge your understanding of Materials Strength 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 Materials Strength 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 Materials Strength. 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 Materials Strength knowledge to the test? Let's get started with our carefully curated MCQs!

Materials Strength MCQs | Page 17 of 24

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Q161.
The principal stresses at a point are 100, 100 and-200 kgf/cm², the octo hedral shear stress at the point is :

a.

100 √2 kg/cm²

b.

200 √2 kg/cm²

c.

300 √2 kg/cm²

d.

400 √2 kg/cm²

Discuss
Answer: (a).100 √2 kg/cm²
Q162.
During a tensile test on a ductile material

a.

nominal stress at fracture is higher than the ultimate stress

b.

true stress at fracture is higher than the ultimate stress

c.

true stress at fracture is the same as the ultimate stress

d.

none of these.

Discuss
Answer: (b).true stress at fracture is higher than the ultimate stress
Q163.
Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to

a.

very long columns

b.

long columns

c.

short columns

d.

intermediate columns

Discuss
Answer: (d).intermediate columns
Q164.
Pick up the correct statement from the following :

a.

The point through which the resultant of the shear stresses, passes is known as shear centre

b.

In the standard rolled channels, the shear centre is on the horizontal line passing through and away from the C.G. beyond web

c.

In equal angles, the shear centre is on the horizontal plane and away from the C.G., outside of the leg projection

d.

All the above.

Discuss
Answer: (d).All the above.
Q165.
The moment diagram for a cantilever carrying a concentrated load at its free end, will be

a.

triangle

b.

rectangle

c.

parabola

d.

cubic parabola.

Discuss
Answer: (a).triangle
Q166.
In a shaft rotated by a couple, the shear force varies

a.

from zero at the centre to a maximum at the circumference

b.

from minimum at the centre of maximum at the circumference

c.

from maximum at the centre to zero at the circumference

d.

equally throughout the section

Discuss
Answer: (a).from zero at the centre to a maximum at the circumference
Q167.
The section modulus of a rectangular light beam 25 metres long is 12.500 cm³. The beam is simply supported at its ends and carries a longitudinal axial tensile load of 10 tonnes in addition to a point load of 4 tonnes at the centre. The maximum stress in the bottom most fibre at the mid span section, is

a.

13.33 kg/cm² tensile

b.

13.33 kg/cm² compressive

c.

26.67 kg/cm² tensile

d.

26.67 kg/cm² compressive

Discuss
Answer: (c).26.67 kg/cm² tensile
Q168.
The ratio of the maximum deflection of a cantilever beam with an isolated load at its free end and with a uniformly distributed load over its entire length, is

a.

1

b.

24/15

c.

3/8

d.

8/3

Discuss
Answer: (d).8/3
Q169.
For a beam of uniform strength keeping its depth constant, the width will vary in proportion to

a.

bending moment (M)

b.

√M

c.

M²

d.

none of these.

Discuss
Answer: (a).bending moment (M)
Q170.
A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be

a.

5 tonnes metre

b.

10 tonnes metre

c.

15 tonnes metre

d.

20 tonnes metre

Discuss
Answer: (d).20 tonnes metre
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