GATE EE 2011 Question Paper (13-Feb-2011) (Shift 2)

A low-pass filter with a cut-off frequency of 30 Hz is cascaded with a high pass filter with a cut-off frequency of 20 Hz. The resultant system of filters will function as

For the circuit shown below, the correct transfer characteristics is

A 3 - ϕ CSI used for the speed control of an induction motor is to be realized using MOSFET switches as shown below. Switches S₁ to S₆ are identical switches.



The proper configuration for realizing switches S₁ to S₆ is

A point Z has been plotted in the complex plane, as shown in figure below.



The plot of the complex number $Y=\frac{1}{Z}$ is

The voltage applied to a circuit is $100\sqrt{2}\cos \left(100\pi t\right)$ volts and the circuit draws a current of $10\sqrt{2}\sin \left(100\pi t+\pi /4\right)$ amperes. Taking the voltage as the reference phasor, the phasor representation of the current in amperes is