Aux 2 Unit 6 Quiz 3

Correct Answer:
B) kVA² = kW² + kVAr²

Explanation:
In an AC system, apparent power (kVA) is the vector sum of true power (kW) and reactive power (kVAr). This relationship is represented by the equation

Correct Answer:
B) Through precise adjustment of governors and excitation systems

Explanation:
Stable load sharing for true power (kW) is managed through the governor control of the prime movers, while reactive power (kVAr) is stabilized by adjusting the excitation systems to control voltage output.

Correct Answer:
B) Proportionally based on their load sharing set points and prime mover control

Explanation:
True power sharing between parallel generators is managed by adjusting the prime mover control to ensure each generator shares the load according to its set capacity and rating.

Correct Answer:
B) The generator with the higher voltage output takes most of the reactive load

Explanation:
Reactive power sharing depends on the excitation system and voltage settings of each generator. The generator with the higher excitation (voltage setting) will supply more reactive power.

Correct Answer:
C) Reactive power (kVAr)

Explanation:
Reactive power (kVAr) is associated with the energy stored and released by inductive and capacitive components in the system, which does not perform useful work but affects the power factor.

Correct Answer:
B) It would take on more reactive power than the other generator

Explanation:
The generator with higher excitation will provide more reactive power to the system due to its higher voltage output.

Correct Answer:
B) The ratio of kW to kVA

Explanation:
The power factor (cosθ) is the ratio of true power (kW) to apparent power (kVA) and indicates how efficiently the power is being used.