To maintain the constant true strain rate of a sample, the crosshead v – McqOptions

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1.	To maintain the constant true strain rate of a sample, the crosshead velocity should increase with the increase in the length of the specimen. What will be the optimum velocity with the change in length to keep the true strain rate constant? (True strain rate= , L=length of sample, t=time).
A.	v=
B.	v= *L
C.	v= Lexp( t)
D.	v= Lexp( /t)
Answer» D. v= Lexp( /t)

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