Answer Posted / harnish desai

tehere are 3 nos. of earthing requres for comissioning of
x'mer.
1) body earth
2) neutraal earth &
3) lighting arrester earth.

where is the need for short circuit test for 3 see is required and why? can you explain in brief with application

1413

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Where should the lighting arrestor be placed in distribution lines?

670

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How to determine alternating current frequency?

696

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what is (+) and (-) in generator field detector stand for?

1387

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what is meant by loss of field in a DC motor? how a universal motor works?

1395

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PLEASE SEND ME NTPC RELATED INFORMATION LIKE WHICH TOPICS HAV MORE SCOPE,BOOKS TO READ,CUT OFF...PLEASE.mail at thiru.1203@gmail.com

1591

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Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?

1609

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Can i use the B-curve MCB instead of C-curve MCB

1601

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When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?

1655

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Why we are using only Dyn11 tranformer in distribution system but not using a Dyn1 in distributing system?why not and advantage and disadvantage in both

2318

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(1)WHAT HAPPENS WHEN SUDDENLY LOAD GIVEN TO THE INDUCTION MOTOR ? (2)CAN WE MAKE WOOD AS MAGNET ? (3)WHAT IS THE VALUE OF MAGNETIC FLUX DENSITY IN TRANSFORMER ? (4)WHY WE ARE USING ELECTROMAGNETI NOT ELECTROSTATIC IN MACHINE ?

1676

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What is the permissible maximum flux density in transformer core?

734

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when will be the iocl interview results ifaced the interview on september 8 th

1639

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apti mainly on logical reasoning, verbal and non-verbal ability (70 percent) and remaining technical. I was in ee but technical had mech ques like on turbines and welding.

1729

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When we giving the 3 phase supply to ups system how to coming netural?

1648

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