Mechanical Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 34)
34.
When a bar is cooled to - 5°C, it will develop
Discussion:
106 comments Page 7 of 11.
Mahendra said:
1 decade ago
The tensile stress answer may be correct when bar is fixed at both end otherwise no stress will developed in bar.
Ramu said:
8 years ago
When cooling contraction takes place, but the bar develops Tensile stress, it will try to oppose the contraction.
Amit katara said:
8 years ago
Tensile stress is the correct answer but the body should be restricted to change the shape because of cooling.
Aman said:
1 decade ago
Correct answer is tensile stress b/c bar material resist the force which want to do the shrink the material.
Shubham Patil said:
1 decade ago
The right answer is Compressive Stress, because in question it is not mentioned that it is fixed or not.
Debashis said:
8 years ago
Here answer should be: no stress.
But, if the bar is made of steel then, it should be: tensile stress.
But, if the bar is made of steel then, it should be: tensile stress.
Chethan said:
1 decade ago
But in question it is not mentioned whether the bar is allowed to expand freely or it is held rigidly.
Rajesh kumar patel said:
5 years ago
The right answer is compressive stress.
And when free bar then hired then no thermal stress dovlepod.
And when free bar then hired then no thermal stress dovlepod.
(1)
Prerana said:
1 decade ago
@Taniya, then compressive stress should be developed in bar undergoing free expansion due to heating?
Anup said:
10 years ago
Yes, by compressing the material. The compressive force is induced but tensile stress is developed.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers