GATE XE 2023 | Question: 101

Question

\begin{tabular}{|l|l|}
Q. 111 & \begin{tabular}{l}
A copper wire upon loading instantaneously increases in length to $l$, and then \\
continues to elongate gradually. Upon unloading, the wire retracts to length $l$. \\
According to the Maxwell model, which one of the options given correctly relates \\
the total strain $E$, the applied stress $S$, the modulus $G$, the material's resistance to \\
flow $\eta$, and the elapsed time $t$ between loading and unloading?
\end{tabular} \\
\hline

• A. & $E=(S / G)-(S / \eta) t$ \\
  \hline
• B. & $E=(S / G) \times(S / \eta) t$ \\
  \hline
• C. & $E=(S / G)+(S / \eta) t$ \\
  \hline
• D. & $E=(S / G) /(S / \eta) t$ \\
  \hline
  \end{tabular}