Answer Posted / ravindra

Transformer rating calculated in KVA. We can measure any
transformer rating from its HT & LT Bushing.

What is load boxes ?

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pls tell me function of closing coil of A.C.B.

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3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

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What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

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Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.

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What is the use for cable entry in control room?

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what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .

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What is the unit of attenuation?

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sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

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What is the exact formula for one weber of magnetic flux?

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How to determine alternating current frequency?

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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 ?

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what is the stear deltaprinceple?

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I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions

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Batteries used for electrical energy storage are a. Laclanche cells b. Edison cells c. Lead acid cells d.any of the above

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