Faults in electrical system

Faults in electrical system


What is NO and NC switch?


Why we use 11kv, 33kv, 66kv? Why not 10kv, 20kv, 30kv?



Why transformer rating in KVA:-




Difference between A.C and D.C:-




Apparent power, Real power, Reactive power:-



What is power factor? Lagging power factor, leading power factor, unity power factor:-




Difference between synchronous motor and induction motor:-




Class-A Power amplifier:-




Power Dissipation capacity, collector efficiency, distortion:-




Disadvantages of low power factor:-

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