Question

What does the transient reactance (X'd) represent in a generator?

A) Reactance that accounts for the initial response to a fault.
B) Reactance that represents the steady-state response to a fault.
C) Reactance that accounts for the long-term transient behavior of the generator.
D) Reactance that represents the resistance of the generator windings.

Answer 1

The transient reactance (X'd) in a generator represents the reactance that accounts for the initial response to a fault. It helps to limit sudden changes in current and voltage following a fault and maintain generator stability.

Step-by-step explanation:

The transient reactance (X'd) in a generator represents the reactance that accounts for the initial response to a fault. It is the reactance that comes into play during the transient period immediately following a fault in the electrical system. During this period, faults cause sudden changes in current and voltage, and the transient reactance helps to limit these changes and maintain the stability of the generator.