Answer Posted / dinesh ku mahanandia

reactive power flow first becouse reactive power start
flowing after the motor is switche on.

pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..

2115

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th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.

2020

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why the difference arise between HT reading & LT reading (submeters fixed in complexes, apartments etc)if the power factos exceed from 0.9 to 1 can the ht meter reads fast?

3028

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How i can calculate current of cable according to ares?

2044

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Explain few advantages of electric traction system?

1184

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if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

2012

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Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

2131

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How to determine stage of Automatic Power factor controlling Relay(Apfcr)?

2213

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How can calculate the rating of a alternator for a given specific load with formula

2420

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For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

2380

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Why do we use center tap transformer that used with portable tools

2303

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What do you mean by reach and reach the point of the relay?

1310

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how we decide wire gauge for ac or dc coil and what is the basic diff. B/w these two coil?

2255

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what is the min and max ohmic resistance for the earthing rod installed for lighting poles for street light network

3875

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List the advantages of star-delta starter with induction motor?

1055

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