Answer / dinesh kumar

Transformer is a satatic device which transform power from
one winding to another winding without change in frequency.

Answer / minal

In a power plant, the main transformer is called Generator
transformer.The input given to the main transformer has
delta connection. The output taken out from the secondary
windings of the transformer has star connections.

Answer / minal

Generator transformer is called main transformer.The output
of a generator is connected to a main transformer. It steps
up the the generating voltage.

Answer / ravi kant yadav

A transformer is a device that transfers electrical energy
from one circuit to another through inductively coupled
conductors—the transformer's coils. A varying current in
the first or primary winding creates a varying magnetic
flux in the transformer's core, and thus a varying magnetic
field through the secondary winding. This varying magnetic
field induces a varying electromotive force (EMF)
or "voltage" in the secondary winding. This effect is
called mutual induction.

If a load is connected to the secondary, an electric
current will flow in the secondary winding and electrical
energy will be transferred from the primary circuit through
the transformer to the load. In an ideal transformer, the
induced voltage in the secondary winding (VS) is in
proportion to the primary voltage (VP), and is given by the
ratio of the number of turns in the secondary (NS) to the
number of turns in the primary (NP) as follows:


By appropriate selection of the ratio of turns, a
transformer thus allows an alternating current (AC) voltage
to be "stepped up" by making NS greater than NP,
or "stepped down" by making NS less than NP.

In the vast majority of transformers, the windings are
coils wound around a ferromagnetic core, air-core
transformers being a notable exception.

Transformers range in size from a thumbnail-sized coupling
transformer hidden inside a stage microphone to huge units
weighing hundreds of tons used to interconnect portions of
power grids. All operate with the same basic principles,
although the range of designs is wide. While new
technologies have eliminated the need for transformers in
some electronic circuits, transformers are still found in
nearly all electronic devices designed for household
("mains") voltage. Transformers are essential for high
voltage power transmission, which makes long distance
transmission economically practical.

Answer / santoshkosuru

If a load is connected to the secondary, an electric
current will flow in the secondary winding and electrical
energy will be transferred from the primary circuit through
the transformer to the load. In an ideal transformer, the
induced voltage in the secondary winding (VS) is in
proportion to the primary voltage (VP), and is given by the
ratio of the number of turns in the secondary (NS) to the
number of turns in the primary

Answer / senthil .m

transformer means one winding to another winding to gives
without change in frequencey (primary to secondary winding)

Answer / ramendra shukla

A Device which tranform the electrical voltage form one
magnitude to another magnitude without changing the supplu
frequency is know as Transformer.
It does so by faraday`s Electromagnetic induction law.
A main x-mer is satuated at generating end the
output of Alternator is connected with this& then its
output is feeded for supply in Y-connection maaner.

sir, how to select the cable size, what is the parameters use ang what is the formulas use for this cable size calculations. please tell me.

4 Answers   ISRO, Power Grid,

What are the major reasons for balancing hydro-thermal mix?

0 Answers  

why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

7 Answers   HCIL, Jindal, Siemens,

what is b checks and m checks in diesel generator maintenance?

1 Answers  

Why ferranti effect occurred in leading p.f load?

1 Answers  

What is Annunciation?

0 Answers   Solare,

why the autotransformer burnt while stating the pumpmotor?, In starter and motor there was no abnormality.

4 Answers  

how do u calculate CT rating for 10 mva transformer

2 Answers   Enercon,

when we supply in primary side of transformer then the supply goes in secondary side?how it works?

4 Answers  

which network topology offers the greatest level of tolerance?

0 Answers  

Is there is any hazard to insulation of 3hp motor 5 KV megger is used for it?

1 Answers  

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0 Answers