what is diffential relay? testing proceure?and transformer reach Over load thet time differencilal relay operate or not ?

5 Answers  

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directional relay is typically used to respond in fault condition who it can be used just as reverse power protection which purely senes direction reversal to operate a circuit breaker?

1 Answers  

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why occ characteristics of generator is also called as magnatization characteristics ?

0 Answers  

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In Indian Railways , how the AC motor is driven? Please explain clearly starting from the overhead 25kV supply.

1 Answers  

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In an electrical power supply,why if neutral phase of a 3phase supply fail over current occur but if it's single phase supply neutral phase fail low current occur? 

1 Answers  

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what is different between phase and netural

0 Answers  

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What is the important precuations need tocarried out while working with Electrolite in Battery PM?

0 Answers  

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how the voltage between all the three phase is zero can any body explain me

5 Answers  

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Why the voltage n frequency of the incoming generator is kept slightly higher than d grid voltage n frequency while synchronization ?

4 Answers  

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what happends when an isolater is operated on on-load

1 Answers  

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please send me previose rrb junior engineer qustion papers

0 Answers   RRB,

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electricity bill multiplication factor 487.20xconsumption=total unit in kwh. what is 487.20 ?

1 Answers   Spec International,

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