Answer / guest

over current-a)instantaneous, idld,thermal earth fault,
under votage.

Answer / romeo

in addition, differential relays for current and voltage
are necessities also to monitor considerable leakage of
current and difference in voltage (in case of two leg
switchgear for a make and break design) to a magnitude that
will activate tripping action or prevent closing of the bus
tie.

which element is neglected during fault calculation? a)resistance b)inductance c)capacitance d)reactance

4 Answers  

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WHEN I AM CONNECTIN TWO ELCB IN PARALLEL.ONE ELCB TRIPPED...HOW IT HAPPEND??

5 Answers  

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what is relation betn. KW & KV?

10 Answers  

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respetsed sir, i have applied for section engg and juniour engg for both chennai and tiruvunabthapur boards for electrical deportments . can u suggest what books i have to follow and and also from which sections they r going ask (i mean weightage and what topics i have to cover) for both se and je for both chennai and tiruvunanthapur boards.......

1 Answers  

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How calculate the MTA in relay?

1 Answers   Unicharm,

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which type of breaker sould be used for different level of voltage ? (i.e at 11 Kv, 33 Kv, 66 Kv....

8 Answers  

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In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

0 Answers   ITI,

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why the earth pin in a 3-pin socket is longer and thickest?

5 Answers  

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What is Peterson coil? Where it is used?

2 Answers  

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where does core based current transformer is used? and what is the value of lux in a work station?

1 Answers   Space Matrix,

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What is the working principle of MIG welding? and its out put Voltage?

0 Answers   L&T,

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what is blocking diode and what is the use of it in tne control circuit.Pls Explain it.

1 Answers  

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