Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 4 (Q.No. 41)
41.
The section modulus of a rectangular section is proportional to
Discussion:
21 comments Page 1 of 3.
SHubam said:
7 years ago
Correct answer is A. Depending upon the axis which you are taking for calculation whether it is Ix or Iy. Depth & width changes but the area remains same. In simple language,
Ix= product of area n depth.
Iy = product of area n width.
Hence in this question. Axis is not given. So Z will change with the change of I. But area remains same in both the conditions.
Ix= product of area n depth.
Iy = product of area n width.
Hence in this question. Axis is not given. So Z will change with the change of I. But area remains same in both the conditions.
(7)
Prashant said:
6 years ago
In option A, C and D. Area is common and its product with depth and width gives the section modulus, depending upon the axis in consideration. So, AREA is common is all possible options. That's why option A is correct.
(6)
Nicks said:
6 years ago
If axis changees be Ix or Iy section modules will change.
So, be it bd2/6 or b2d/6. Section modulus will be proportional to 1/6 * area* depth. So C must be the correct answer.
So, be it bd2/6 or b2d/6. Section modulus will be proportional to 1/6 * area* depth. So C must be the correct answer.
(3)
Mian Khan said:
8 months ago
Correct option is (C) product of the area and depth
The section modulus (Z) of a rectangular section is proportional to the product of the area and depth. Here's why:
Z = (b * d²) / 6, A = b * d.
Z = (b * d) * (d/6) = A * (d/6).
This shows that the section modulus (Z) is directly proportional to the area (A) multiplied by the depth (d) divided by 6. Since 6 is a constant, we can say Z is proportional to A * d.
The section modulus (Z) of a rectangular section is proportional to the product of the area and depth. Here's why:
Z = (b * d²) / 6, A = b * d.
Z = (b * d) * (d/6) = A * (d/6).
This shows that the section modulus (Z) is directly proportional to the area (A) multiplied by the depth (d) divided by 6. Since 6 is a constant, we can say Z is proportional to A * d.
(2)
Amjad Ali said:
6 years ago
Yes, agree. C is the correct Answer.
(1)
Shivkumar said:
7 years ago
You are right @Sumit.
The answer will be A.
The answer will be A.
Karpi basar said:
2 months ago
Thank you @Shubam.
Sonu (Guruji) said:
3 years ago
Agree, the right Answer should be A.
Manojkumar Rajendran said:
3 years ago
They didn't mention section modulus about which axis.
So, it may be about c.g or base or any axis.hence general for z=A.x and z=A.x^2 hence it is proportional to Area. Therefore, Answer A is correct.
So, it may be about c.g or base or any axis.hence general for z=A.x and z=A.x^2 hence it is proportional to Area. Therefore, Answer A is correct.
Suman said:
5 years ago
Thanks @Shubam.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers