Power Systems T...

The line current of a 3-phase power supply are I_R = 3 + j5 A, I_Y = 2 + j2A and I_B = -2 – j1A. The reactive part of the zero-sequence current will be _____

If the base voltage increase by 4 times and base MVA increased by 3 times of that pervious value the per unit impedance of a synchronous machine is _______ times of that of pervious value.

The value of a transmission line impedance is 5 pu with 10 MVA, 10 kV base values. Its impedance in ohms is- 

A balanced star connected load takes 50 A from a balanced 3-phase. 4-wire supply. The zero and positive sequence components (I_ao and I_a1) of the line current (I_a) are respectively

A three phase transmission line has a self-reactance of 0.2 pu and mutual reactance of 0.05 pu. The sum of positive sequence reactance, negative sequence reactance and zero sequence reactance is __ (in pu)

The line current flowing in the lines toward a balanced load connected in delta are I_a = 100∠0°, I_b = 141.4∠225°, I_c = 100∠90°. Find the symmetrical component of the line current.