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Examoogle • User • info@examoogle.com • EE-2024-8821
Chapter 1 of 12 • Page 1 of 248🔒 Protected PDF • Watermarked
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Synchronous capacitor (condenser) is
An ordinary static capacitor bank
An over-excited synchronous motor driving mechanical load
An over-excited synchronous motor without mechanical load
All of these
An over-excited synchronous motor without mechanical load
A synchronous capacitor is essentially an over-excited synchronous motor that operates without any mechanical load. It can provide reactive power support in electrical systems.
A synchronous capacitor is essentially an over-excited synchronous motor that operates without any mechanical load. It can provide reactive power support in electrical systems.
When a synchronous motor is over-excited, it draws reactive power from the supply and can contribute to voltage regulation in the system. By running without a mechanical load, the motor behaves like a capacitor, compensating for lagging power factor in the grid.
Synchronous capacitors help improve power factor.
They operate at leading power factor, unlike inductive loads.
Improves voltage stability in power systems.
Enhances the overall efficiency of the electrical network.
Requires maintenance similar to synchronous motors.
Involves higher initial costs compared to static capacitor banks.
Voltage regulation in transmission systems.
Support for renewable energy generation facilities.
Synchronous capacitors are key for managing reactive power in high-load scenarios.
Option A is incorrect as it refers to a static capacitor bank that does not provide dynamic reactive power.
C is correct — a synchronous capacitor operates like an over-excited synchronous motor without any load.
Understand the role of synchronous motors in reactive power management to prepare for questions related to power systems.