Civil Engineering MCQAE Level Civil Engineering
A bimetallic strip bends on heating because:
Strength of MaterialsBimetallic Strip BendingEASY
Choose the correct answer
A
Both metals expand equally
B
Metals have different thermal expansion coefficients
C
One metal does not expand
D
Temperature is non-uniform through thickness
Correct Answer
B. Metals have different thermal expansion coefficients
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Different α values: metal with larger α expands more on one face→bending.
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