21. |
The symmetrical components are used in the fault analysis because
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Answer:
Option (b) |
22. |
The value of expression 1 + α + α2
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Answer:
Option (a) |
23. |
In the case of balanced 3 phase current, zero sequence component of current is
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Answer:
Option (a) |
24. |
Zero sequence component in 3 phase voltage of delta is
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Answer:
Option (b) |
25. |
In a star connected system without neutral grounding, zero sequence currents are
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Answer:
Option (a) |
26. |
A balanced three phase system consists of
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Answer:
Option (b) |
27. |
Positive sequence current of a transmission line is
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Answer:
Option (c) |
28. |
An unbalanced system of three phase voltage having RYB sequence actually consists of
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Answer:
Option (d) |
29. |
In case of an unbalanced star connected load supplied from an unbalanced 3 phase, 3 wire system, load current will consist of
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Answer:
Option (d) |
30. |
For an unbalanced fault with paths for zero sequence currents at the point of fault
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Answer:
Option (b) |