how to protect transformer

2 Answers  

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why we changed the polarity of DC generator ?

1 Answers   DMRC, Microsoft,

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how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)

0 Answers  

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whose motors self starting synchronous or Induction motor?give fact reason why not self starting another mother

2 Answers  

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What happens to the terminal voltage of an alternator connected to a bus bar when it is suddenly disconnected from the bus bar??

2 Answers  

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What are the various reasons for an inductin motor to get heated?

1 Answers   Monnet,

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what is the difference between potential Transformers and capacitive voltage transfoemers and where it is used?

5 Answers  

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WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?

0 Answers  

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how current is reverse from its normal direction during the fault?

0 Answers   HGF,

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oltc of a transformer, how it works? and what are the equipment consist of describe briefly?

0 Answers  

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watt meter have 4 terminals what there name??? and what theses 4 terminals indicates ?? and why 2 terminals are short circuited??

1 Answers  

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what happen if one of 3-phase line has a much higher load when we are using delta to star transformer? how we can over-come from that?

2 Answers   Getco,

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