PYQs Based Test - 02 : Electrical Circuits and Machines

Three 400 Ω resistors are connected in delta and powered by a 400 V (rms), 50 Hz balanced, symmetrical R-Y-B sequence, three-phase three-wire mains. The rms value of the line current (in amperes, rounded off to one decimal place) is

In the circuit shown in the figure, the switch S is closed at time t = 0. The supply current at t = 0⁺ and the capacitor voltage at t → ∞ are, respectively

The linear I-V characteristics of 2-terminal non-ideal dc sources X and Y are shown in the figure. If the sources are connected to a 1 Ω resistor as shown, the current through the resistor in amperes is __________ A.

The connection of two 2-port networks is shown in the figure. The ABCD parameters of N₁ and N₂ networks are given as

{≤ft[ {*20c A&B\\ C&D } ]_N_1} = ≤ft[ {*20c 1&5\\ 0&1 } ]and {≤ft[ {*20c A&B\\ C&D } ]_N_2} = ≤ft[ {*20c 1&0\\ 0.2&1 } ]



The ABCD parameters of the combined 2-port network are

Consider the circuits shown in the figure. The magnitude of the ratio of the currents, i.e., |I₁/I₂|, is __________.