A steel strip is welded to a copper strip of the same dimensions along – McqOptions

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1.	A steel strip is welded to a copper strip of the same dimensions along the length. The coefficient of thermal expansion for copper is greater than that for steel. If temperature is increased, ___ .
A.	copper has tensile stress
B.	steel has tensile stress
C.	both have tensile stress
D.	none of the above
Answer» C. both have tensile stress

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