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Mrityunjay kumar

· started a discussion

· 1 Months ago

thermal stresses (Question:423831.0)

200 MP compressive

Question:

A metal rod is rigidly fixed at its both ends. The temperature of the rod is increased by 100°C. If the coefficient of linear expansion and elastic modulus of the metal rod are 10 × 10-6/°C and 200GPa respectively, then what is the stress produced in the rod?

Options:
A)

100 MPa (tensile)

B)

 

200 MPa (tensile)

C)

 

200 MPa (tensile)

D)

 

100 MPa (compressive)

Solution:

Ans: (c)

Thermal stress = α T E

= 10 × 10-6 × 100 × 200 × 1000    

= 200 MPa (compressive)

Mrityunjay kumar

· commented

· 1 Months ago

ans incorrect
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