Answer Posted / skj

Star-Delta/Delta-star is prefered so that delta eliminates Zero sequence current and harmonics.

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how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?

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what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

1786

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Differentiate between induced emf and self inductance?

614

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How do u analyse protection fault when vcb tripping on load

1175

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why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?

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why the colour of insultor stack , petticoat is brown. Is it has some technical reason.

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3ph motor running with unequal kw and different pf what are the reasons

1236

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Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.

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can any one know is sbi interview based on merit or based on roll number

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please send previous exams question papers

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Work done in a free expansion process is

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How to calculate the heat load for a electrical room

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WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

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