Answer Posted / amit biswas

magnetic contractor is more of a sequence swiitcing device
while later is aprotection device.

even the contractrs on papers can perform the operation of
a cb.But to my cognizance I had never seen any contracor at
HT level

every time a c b operates it required to chare the spring
manually (or motor but with manual interferance) which is
not in case of contractors

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB to another Power DB?

1988

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define the non synchoronism of synchoronous machine in general g or m??

1940

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How to calculate phase to phase difference ?

2305

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1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

1934

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what are factors to be consider to design a HT & LT motor?

2369

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why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.

2200

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If we want to change a contactor of faulty one what are the conditions want to fullfil

2043

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Explain and give examples about VCB?

3359

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which of the following elements is not present in stainless steel

2586

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what happend to DC shunt motor if its field winding insulation becomes slightly weak? will that motor can run on full load or not explain in detail. thanks

1703

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plz tel me syllabus and exam date 4 jr executive engg (electrical)

2027

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i want some interview related questions with their answers which can help for attend the interviews...

1702

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What will be the fault current of any system when its generation is 10% of BASE generation( FUll Load )?Will is 10% or the same as full base calculation?

1975

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Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.

1977

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What Is HO factor in power selection

2121

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