Answer / sujeet pandey

there can transformers with 0 degree or 180 degree phase
displacement like in the case of star-star or delta-delta .
In case of star-delta or delta-star transformer there is a
phase difference of +30 or -30 degree depending on
connection b/w them.This phase difference is due to the
relation b/w phase voltage of primary winding and phase
voltage of secondary winding.

Answer / surendra

dy5 basaically suitable with respect to winding displacement
as need of 120 degree in space for obtaning pure revolving
flux. another reason is in this is pressure on winding will
be symetric...

Answer / srikant

i also faced it.....dont know

why put integration for capacitorand differation for inductance

1 Answers  

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why the voltage level in transmission line are in multiple of 11kV, 22kV, 33 kV etc..( i.e., 220 V )?

4 Answers  

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Why carbon brushes are used in motors?

6 Answers   BARC,

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3phase cable calculation formula by motor load

0 Answers  

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what is method for testing CT

0 Answers   DCM,

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Is it required to lay GI wires along with GI/MS conduits from one point to another point though separate earthing cable is conncted from DB to Socket?

0 Answers  

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Does induction motor start with dc power supply????

4 Answers   Essar,

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why transformer rating is given in kva?

2 Answers  

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what instruments used for measuring of inductance and capacitance.

2 Answers  

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what is method of dc current measurement

5 Answers  

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Why Exciter higher ferquency ?

1 Answers   Core Logic,

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In our factory so many iron pillors are exists for supporting the shed/Hangar. If do more no of earthings at one piller instead of doing more earth pits in many locations and running earth strip around the hanger, I can save the money. Please suggest this method is acceptable as per Is specifications though the Earth resitance of the farthest piller is with in the limits as per IS specifications.

0 Answers   HAL,

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