Answer / sunil solanki

circuit breaker operating time & tripping time should be in
ms.also tripping time should be less than operating time.

Answer / barkha thakur

Circuit breaker operating time & tripping time should be
few cycles of the supply voltage

Answer / electrix

Cicuit Breaker Opening / Closing time are always in milli
secs. usually in 11 kv breakers it is around 60 - 80 ms for
closing and 40 - 60 ms for opening.

why we use isolation transformer?

2 Answers   Godrej,

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Whta is WT in a transformer, specify its function.

4 Answers  

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what is the difference between current rating and breaking current of an MCCB? and for a known load how to calculate the current rating of a MCCB?

1 Answers   HPL,

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HOW TO FIND THE PRIMARY AND SECONDARY OF TRANSFORMER(IN OFF CONDITION) USING MULTIMETER? IS IT POSSIBLE FIND BY SEEING RESISTANCE???

4 Answers   Areva,

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In a Impedance Based Distance Relay (Quad Characteristics) - Could there be two different Line Angle(RCA) for Ph-Ph & Ph-Gnd? If So Kindly Let me Know.. Where, What are the advantages of the same?

0 Answers  

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What is YNyn Transformer? and what are the other types in this?

3 Answers  

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what is the difference between ACTIVE POWER and REACTIVE POWER.I WANT CLEAR ANSEWER.

8 Answers  

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can anyone tell me can the electromagnetic waves can be reflected back?if so how &by which material it can be reflected back?please tell me so that it can help to my wireless power trasnmission device.

0 Answers  

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Explain what happens to the speed of a series motor as the load decreases

1 Answers  

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hw the cable size can be calculated when we have watss, volts, pf, i need the forula

2 Answers  

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Find the netid and hostid for the following classful IP addresses? i) 117.34.3.8 ii) 132.57.8.6 iii) 207.3.54.12

2 Answers   UOG,

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dear sir, i completed diploma in electrical in 2005, how i can get electrical supervisor liance in mumbai

0 Answers  

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