In an electric motor, the input is an electrical signal (voltage), and the output is mechanical motion (rotation). What does the transfer function T(s) represent in this system?

Correct option is B

​$$\text{In control systems, the transfer function } T(s) \text{ is defined as the ratio of the Laplace transform of the output to the Laplace transform of the input, assuming zero initial conditions:} \\[8pt]T(s) = \frac{\text{Output}(s)}{\text{Input}(s)} \\[10pt]\text{For an electric motor:} \\[6pt]\bullet \ \text{Input } \rightarrow \text{ electrical signal (voltage)} \\[2pt]\bullet \ \text{Output } \rightarrow \text{ mechanical motion (angular position or speed)} \\[8pt]\text{Hence, the transfer function represents the ratio of mechanical output to electrical input.}$$​​