Answer / rajesh

Air circuit breakers can be used for LT (415V). For higher
voltages (27.5KV etc. encountered in the railway
use),Vacuum circuit breaker is needed.

Answer / aditya dash

air circuitbreaker

why conductors of low tensile strength 1)produce greater sag and 2)can not be used for larger spans

1 Answers  

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what is positive,negative and zero sequence in power system?

4 Answers  

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Why transformer making noise during the operation?

2 Answers   TCS,

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what is the full form of ka (100A mccb KA)

1 Answers  

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1. what is exciting winding, rotor winding, startor winding. and how it works? in ac generator

3 Answers  

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What is the use of Gateway RTU like ABB RTU 560 in power plant, SAS system ?

1 Answers   ABB,

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Why the power factor improvement is so important in industrial loads

0 Answers  

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explain why reduced voltage starters are required for large tree phase inudction motor

2 Answers  

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I have a 600VA numeriv digital UPS for computer only. It holds for 15 minutes only. but i am try to using home CFL Light I cant using UPS 2 or 3 secound automatic off .but computer ok how to change this is in to ups ?

1 Answers  

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If a three phased motor or not working phased change on poles so how to find which one red yallow & blue

1 Answers  

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What is the arc. I saw word arc in between sf6 & vcb brakers

1 Answers   Cap Gemini,

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What is mean by % impedance of transformer? detail explanations expected.

1 Answers   FCUK,

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