whatis the test procedure for lightning arrester which was installed one year back. i want check it whether it is working or not.

1 Answers  

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why the transmission side of the generating transformer is always star??

5 Answers  

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what is real , reactive and apparani power

1 Answers  

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what is the difference between ELCB and RCCB

5 Answers   Concorde, Hyundai,

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What are the components of feedback control system?

0 Answers  

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What is the name of oil which is used in transformer?

3 Answers  

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Is it possible to get earth resistance value"zero" Ohm practically??? If yes,which type of earthing???

9 Answers   TATA,

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why transformer is giving some humming noise .....?

11 Answers   Electrotherm, JSW,

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What will be the total current for 300kva UPS if it runs on 40 to 45 percent load. Is there any formula for to calculate the exact load.

4 Answers   Sodexo,

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dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

1 Answers  

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i wanna know that star point in transformer becomes as a neutral on secondary side now tell me that how is that possible?because if joit the all three winding ends with each other it can b short circuited.dut it doesn't.WHY?pls Answer me in brief.thanks alot

1 Answers  

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In synchronous generators field is rotor and armature is stator.Can we take the output at the rotor in case of synchronous generator by the dc excitation on the stator?

2 Answers  

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