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 2 of 2.
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.
Gurmeet Kaur said:
4 years ago
Fall in temp =tension produced in martial.
Temp trying to compress the material but material try to expand.
Temp trying to compress the material but material try to expand.
Abhishek Thakur said:
4 years ago
Stress on 20°C = 440kg/cm^2,
Stress on18°/C = 396kg/cm^2,
Stress on18°< stress on 20°C.
Therefore compression will occurs,
Due to decrease in temperature.
Stress on18°/C = 396kg/cm^2,
Stress on18°< stress on 20°C.
Therefore compression will occurs,
Due to decrease in temperature.
Mathivathani said:
3 years ago
Please explain the Formula.
Apk said:
3 years ago
It should be Tensile.
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