A dynamo is a device used to convert mechanical energy into electrical energy by means of electromagnetic induction. As the auto rickshaw is started by pulling a rope, mechanical energy is used to rotate the dynamo, which generates electrical energy.
Thus, the correct answer is dynamo.
In the Wheatstone bridge shown below, the sensitivity of the bridge in terms of change in balancing voltage \( E \) for unit change in the resistance \( R \), in V/Ω, is __________ (round off to two decimal places).
An ideal low pass filter has frequency response given by \[ H(j\omega) = \begin{cases} 1, & |\omega| \leq 200\pi \\ 0, & \text{otherwise} \end{cases} \] Let \( h(t) \) be its time domain representation. Then h(0) = _________ (round off to the nearest integer).