Civil Engineering - Strength of Materials - Discussion


If the stress produced by a prismatic bar is equal to the working stress, the area of the cross-section of the prismatic bar, becomes

[A]. zero
[B]. infinite
[C]. maximum
[D]. minimum.

Answer: Option B


No answer description available for this question.

Samm said: (Aug 31, 2016)  
How? Explain it.

Harish said: (Dec 15, 2016)  
Can anyone explain it?

Jay Brahmabhatt said: (Jan 23, 2017)  
Stress = force/area.

According to this, if we increase the stress so the area of section is decreased. So when stress is equal to working stress so the area becomes infinite.

Ubi said: (Mar 21, 2017)  
Anyone please explain this.

Vip said: (Jan 19, 2018)  
D should be the correct answer.

Deepak Kumar said: (Feb 20, 2018)  
Working stress means maximum so the area will be minimum.

Skm said: (May 12, 2018)  
Option D is correct.

Satya said: (May 25, 2018)  
Option D is correct I think.

Neel said: (Jul 15, 2018)  
Freely prismatic bar stress is equal zero. So area is infinite.

Hemraj Basnet said: (Feb 9, 2019)  
Consider S = stress.

Then partial derivative of stress with respect area.
dS/dA=pd(A power minus 1)/dA,
solve it,
A= infinite.

Khurshid said: (Oct 6, 2019)  
I think area has to e infinite when stress is maximum in order to avoid unwanted situation.

Ankit Namdev said: (Aug 23, 2020)  
Minumum is correct one.

B.Nehru said: (Sep 1, 2020)  
Yes, you are right, Thanks @Jay Brahmabhatt.

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