Earth fault relay uses the which of the following sequence currents

Electrical Engineering MCQ Earth fault relay uses the which of the following sequence currents: Correct answer: 2. Zero sequence Explanation: Earth fault relays are used to detect faults to ground in power systems. When a fault occurs, currents flow through the system. In case of unsymmetrical faults like LG, LLG the fault current pass through … Read more

Switchgear equipment includes

Switchgear equipment include: Correct answer: 4. All of these Explanation: In summary, switchgear equipment encompasses switches for control, fuses for protection against overcurrents, and relays and circuit breakers for automated control and additional protective measures. Therefore, the statement “All of these” is correct as it includes all the mentioned components.

The tests performed on oil-filled and gas-filled cables include

The tests performed on oil-filled and gas-filled cables include: Correct answer: 4. All of these Explanation: The tests performed on oil-filled and gas-filled cables include: Therefore, the correct answer is “All of these.” These tests collectively provide a comprehensive evaluation of the performance and reliability of oil-filled and gas-filled cables under various operating conditions.

Stock bridge dampers are used in case of hilly areas so as to overcome

Stock bridge dampers are used in case of hilly areas so as to overcome: Correct answer: 2. Unequal ice loading Explanation: Stockbridge dampers are used in transmission lines, especially in hilly or windy areas, to overcome the problem of unequal ice loading. Unequal ice loading can lead to vibrations and oscillations in the conductors, which … Read more