Fault Studies and System Performance — MCQs – EE

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1. The main objective of fault studies in a power system is to:



2. A fault in a power system is defined as:



3. Fault studies are mainly carried out for:



4. The most common fault in a three-phase power system is:



5. A three-phase fault is also known as a:



6. Unbalanced faults include:



7. The magnitude of fault current depends primarily on:



8. The most severe type of fault in a system is:



9. Short-circuit studies are performed to determine:



10. The unbalanced fault analysis is carried out using:



11. Positive sequence components represent:



12. Negative sequence components appear when:



13. Zero sequence components are present only if:



14. The initial current immediately after a fault is known as:



15. The DC offset in fault current:



16. The circuit breaker must interrupt:



17. The breaking capacity of a circuit breaker is expressed in:



18. The transient reactance of a generator affects:



19. Fault current is usually maximum at:



20. Fault studies help ensure that:



21. The transient stability of a system is affected by:



22. In a double line-to-ground fault, which sequence networks are connected?



23. A balanced fault results in:



24. The per-unit system simplifies fault analysis because:



25. The symmetrical fault analysis is used for:



26. Fault current decreases when:



27. A major consequence of fault current is:



28. System performance after a fault depends on:



29. After a fault is cleared, the system stability depends on:



30. Fault studies and performance analysis are essential for:



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