Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 6 (Q.No. 12)
12.
A steel bar of 2 m length is fixed at both ends at 20°C. The coefficient of thermal expansion is 11 x 10-6/°C and the modulus of the elasticity is 2 x 106 kg/cm2. If the temperature is changed to 18°C, then the bar will be experience a stress of
Discussion:
16 comments Page 1 of 2.
Vicky vikrant said:
9 years ago
I think 44 kg/cm^2 tensile is the right answer.
Chhaya said:
8 years ago
Yes @Vicky, the right answer is D.
Roy said:
8 years ago
When temperature increases thermal stress induced in steel rod is compressive and when temp decreases it is tensile in nature. So option D is the correct answer.
Hariram said:
8 years ago
According to me, there is no chance of being compressive.
Vivek said:
7 years ago
How? Explain please.
Lov said:
7 years ago
It is fixed from both ends so elongation will not take place.
Hence, 11x10^-6 x 2x10^6 x 20 = 44 kg /cm^2 compreesive is the right answer.
Hence, 11x10^-6 x 2x10^6 x 20 = 44 kg /cm^2 compreesive is the right answer.
Himanshu said:
7 years ago
During an increase in temperature steel try to expand or decrease in temp steel will contract. So, the correct is option C.
Pavan said:
6 years ago
There is no mention as temperature Increases. There is mention as changed.
Neelesh said:
6 years ago
Since temp fall from 20 to 18.
So fall in temp = compression.
So, Answer C is right.
So fall in temp = compression.
So, Answer C is right.
(1)
A Ali said:
5 years ago
It should be option D.
(1)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers