GATE 2026 Electrical Engineering Q22

Question

The figure shows the single-line diagram of a synchronous generator delivering P = 50 MW of power at unity power factor to an infinite bus.
I_s denotes the stator current phasor. If the field excitation is increased, which one of the following options correctly describes its effect on the stator current, power factor, and load angle of the machine?

Accepted Answer

Stator current increases, power factor becomes lagging, load angle decreases

Answer

Stator current increases, power factor becomes lagging, load angle remains the same

Answer

Stator current decreases, power factor becomes leading, load angle remains the same

Answer

Stator current increases, power factor becomes leading, load angle increases