GATE EE 2020 Question Paper (08-Feb-2020) (Shift 1)

A single-phase, full-bridge diode rectifier fed from a 230 V, 50 Hz sinusoidal source supplies a series combination of finite resistance, R, and a very large inductance, L. The two most dominant frequency components in the source current are:

Thyristor T₁ is triggered at an angle α (in degree), and T₂ at angle 180° + α, in each cycle of the sinusoidal input voltage. Assume both thyristors to be ideal. To control the load power over the range 0 to 2 kW, the minimum range of variation in α is: (Assume that the load is inductive load)

Which of the options is an equivalent representation of the signal flow graph shown here?

A common-source amplifier with a drain resistance, R${}_D$ = 4.7 kΩ is powered using a 10 V power supply. Assuming that the transconductance, g${}_m$, is 520 μA/V, the voltage gain of the amplifier is closest to:

A sequence detector is designed to detect precisely 3 digital inputs, with overlapping sequences detectable. For the sequence (1,0,1) and input data (1,1,0,1,0,0,1,1,0,1,0,1,1,0), what is the output of this detector?