Whats the frequency used in Rodents Repllant System????? What is the Diff btw Infrasonic & Ultrasonic Frquencies???

1 Answers   Emerson,

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HOW many type of Circut Breaker in the world used in 400 kv substation?

14 Answers   Power Grid,

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What are the types of instrument transformer?

0 Answers  

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1. what is the power factor and whatis his losses 2. what is the working procedure of 51RNB AND 87 relay

3 Answers   ABB,

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Why LED light has advantage of rapid reflection ,although other lights alse reflect.? and this light is considered to be best for transmission usage in case of Free optics

0 Answers  

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what is the difference between kva and kw ?

5 Answers   TCS,

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in a distribution board,if we have a load and we have selected a cable after making all calcs (Deratings and V.D , ect...) the cable we have selected was 10mm.sq. now, shall the internal cable inside the switchboard should be 10 mm.sq Like the external or it can be Less???? if somebody have an specs or information he can help D:

1 Answers  

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hi this toufik here. i am doing my b.e.degree.now i am in final year and supposed to do a project in this year so i thinking to control the buchholz relay using software base means checking the status of transformer oil using microcontroler, plc or scada. so can i do so...??? alz suggest me...

2 Answers  

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losses in transmission lines ?

0 Answers  

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how to change the load sharing between two synchronized identical alternators when both are running with Diesel engine? assume both are feeding to same feeder?

1 Answers   BARC,

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When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?

0 Answers  

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list down a few application of ac & dc in a generating station?

1 Answers  

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