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.

How Kneepoint voltage of CT practically related when CT in service. ie Knp is above 670 what exactly means

0 Answers   ABC,

What is the principle of residual protection?

0 Answers  

what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

0 Answers  

what is mutual induction principle?

6 Answers  

how to find the capacitance value of the motor while running??

0 Answers  

why we use tapechanger in primary side of transformer

5 Answers   Bhel, L&T,

why we use 20 KV, 10KA LA on 22 KV Line

2 Answers  

WHEN SINGLE PHASE SUPPLY AS 220V, WHY THE 3 PHASE- 4 WIRE MEASURED AS 440 VOLTS INSTEAD OF 660 VOLTS (220 VOLTS PER PHASE i.e 220x3 = 660 volts ).

1 Answers  

how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

0 Answers   Tyco,

with 3 phase board on a 63 amp rcd is it ok to have 6 electrical showers 2 on each phase and what problems could happen

0 Answers  

in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?

0 Answers  

what is impedance in a transformer? how can i calculate it?

1 Answers