what is the function of a commutator in a dc generator?

14 Answers   College School Exams Tests, NTPC, TCS,

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what is frequency transformer?

2 Answers  

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6.6Kv feeder feeding tow step down transformers-415V-,what the possible consideration for parrellel operation?

1 Answers  

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what is preventive maintenance? and what is predictive maintenance? and what diffrence both?

3 Answers   Volkswagen,

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HOW MANY POLES ARE THERE IN 3 SLOTS PER POLE PER PHASE MOTOR

2 Answers  

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What are the conditions for sustained oscillator or what is backhouse criterion?

0 Answers  

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what is power factor

3 Answers  

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In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

0 Answers  

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what is skin effect?

6 Answers   MPSEB,

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How Can we calculate current carrieng capacity of Copper Bus-Bars and Alluminium Bus-bar

2 Answers  

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why we don't use earthing as neutral?

1 Answers  

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Is earthing done for AC or DC or both?

6 Answers  

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