GATE 2024 Power System Foundation Quiz 44

The faults on power systems are analyzed easily by making use of

There are three generator connected in parallel for each positive, negative, zero sequence reactance are 0.5 p.u, 0.4 p.u and 0.25 p.u respectively. For pre-fault voltage of 1 p.u, single line to ground fault current magnitude if fault is occurred at terminal of generator is ________.

A 200 kVA, 1φ, 50Hz 2300/230 V transformer has a core loss of 400W. At full load copper loss is 800W and leakage reactance is 0.032 pu. Then percentage efficiency at full load 0.8 pf log.

Consider the single line diagram shown in the figure below. Thevenin equivalent impedance with respect to motor bus is ____pu.

Take positive sequence impedance of generator = j0.4 pu

Positive sequence impedance of motor = j0.4 pu

Positive sequence impedance of line = j0.4 pu

The positive sequence impedance component of three unequal impedances Z_a, Z_b and Z_c is