GATE EE 2022 : Network Theory Quiz 3

Consider the following statements:

(i) Two ideal current sources cannot be connected in series.

(ii) Active element has ability to deliver power for infinite duration.

(iii) Voltage & current source are active elements.

(iv) Series resonance circuit is called current rejector circuit.

Which of the above statements are correct?

A 3-ϕ Voltage source with line voltage of 120 V_rms is used to drive a balanced delta connected load consisting of 3 impedances each with Z_L = (12 + j9) Ω through a set of power lines each of which has an impedance of (1 + j0.5) Ω. The power delivers to the load is ______.

A Balanced abc- sequence, Y-connected source with V_an = 100∠10° V is connected to a Δ-connected balanced load of (8 + j4)Ω per phase. Calculate the line ‘a’ current in the load.

Two balanced 3-φ, star connected system are interconnected as shown in figure:

The set of 3 equal resistors, each of value R Ω, are connected in star across R-Y-B as shown in figure & consumes the same power as the unbalanced ∆ connected load. Find the value of resistor R?