PYQs Based Test - 01 : Electrical Circuits and Electromagnetism

The output voltage of the ideal transformer with the polarities and dots shown in the figure is given by

The source network S is connected to the load network L as shown by dashed lined. The power transferred from S to L would be maximum when R${}_L$ is

A sinusoid (√2 sin t) μ(t), where μ(t) is the step input, is applied to a system with transfer-function $G(s)=\frac{1}{s+1}$ The amplitude of the steady state output is ____.

A household fan consumes 60 W and draws a current of 0.3125 A (rms) when connected to a 230 V (rms) ac, 50 Hz single phase mains. The reactive power drawn by the fan in VAr is ____________ (rounded off to the nearest integer).

Consider a low-pass filter module with a pass-band ripple of δ in the gain magnitude. If M such identical modules are cascaded, ignoring the loading effects, the pass-band ripple of the cascade is