Answer / virendra

Delta - de;ta transfomer is used at Gnerating station or a
receiving station for Change of Voltage , generally it is
used where the Voltage is high & Current is low.
where Delta star is a distribution kind of transfoemr where
from secondary star neutral is taken as a return path .
this configuration is used for Step down voltage phenomina

Answer / raj

delta delta transformer is used in generating systems and
transmission systems because voltage is major
consideration(voltage is stepped up to above 11 or 33kv i.e
220 or 440kv) and delta star transformer is a distribution
transformer(stepped down to 11kv or 440v) because current is
major consideration, in distribution systems we need a
neutral, so the neutral point is taken from star connection.

Answer / rajendran m

Delta - Delta is 3 phase to 3phase.
Delta - Star is 3 phase with neutral

Define damping ratio.

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mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

0 Answers   IFFCO,

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my name is venkat .i have good percentage in my academics(ssc 86, intermediate 83 b.tech 73) my question 1..after completion of my ssc i joined in bpc but i didnt got rank in emcet so i completed MPC in one year compartmentally ..so here what am expect question from this background?

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If I want to buy a new Xformer for my plant what are the main parameter will I need to check?

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why we use single core 630mm2 cable for transformer secondary side

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what will be project cost for 100 kv transformer connection under oyt scheme.

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One watt is equal to how many? we says one watt bulb,means what it consume?

3 Answers  

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What is the criteria for deciding whther fire wall is required between two power transformers

1 Answers  

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what is the voltage between the earth & neutral 2 is there any continuity TO BE between earth & NEUTRAL

3 Answers   Suzuki,

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what is the responsibility of C license holder in industry?

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Can anyone explain about Control and power circuits of star delta starter & DOL starter ? How it works? please!

1 Answers  

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How generator NPS(NEGATIVE PHASE SEQUENCE TEST)TEST WAS DONE? PROCEDURE WITH DETAILS?

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