A. short transmission lines
B. medium length lines
C. long lines
D. for any length of lines
B. medium length lines
C. long lines
D. for any length of lines
Answer: C. long lines
Explanation:
synchronous compensator:
- If it is under the excited condition, it draws the lagging current and, therefore, supplies capacitive or absorbs inductive volt-ampere reactive.
- Thus, a current drawn by a synchronous capacitor or condenser can be varied from lagging to leading smoothly by varying its excitation.
- Synchronous Condensor is also known as Synchronous Compensator or Synchronous Phase Modifier.
- A synchronous condenser or a synchronous compensator is a synchronous motor running without a mechanical load.
- It can generate or absorb reactive volt-ampere (VAr) by varying the excitation of its field winding.
- It can be made to take a leading current with over-excitation of its field winding.
- In such a case it delivers inductive or absorbs capacitive volt-ampere reactive.
- If it is under the excited condition, it draws the lagging current and, therefore, supplies capacitive or absorbs inductive volt-ampere reactive.
- Thus, a current drawn by a synchronous capacitor or condenser can be varied from lagging to leading smoothly by varying its excitation.
- Synchronous phase modifiers are installed at load end.
- Synchronous phase modifiers do not carry Load.
- Synchronous phase modifiers are nothing but synchronous motors.