What is auto transformer?
Answers were Sorted based on User's Feedback
Answer / kavitha
auto transformer consists of only one winding .single
winding is used for both primary and secondary windings.in
this transformer windings are not electrically isolated and
in like ordinary transformer windings are electrically
isolated with each other.
due to single winding cost of this transformer is also less
and voltage regulation is also superior compared to other
transformers.
normally these auto transformers is used as variac that is
for voltage variation purposes.
For example if input voltage is 220v outpu can varied in
steps of 10v 20v 30v 40v etc...........
Is This Answer Correct ? | 173 Yes | 17 No |
Answer / rajendran.m
A single coil using taps on the coil toprovide equivalent
primary and secondary characteristics.
Is This Answer Correct ? | 124 Yes | 30 No |
Answer / logesh.r
Auto Transformer is otherwise called variable voltage
transformer. The primary voltage is constant and the
secondary voltage is variable. Its is mostly used in AC and
DC motors for laboratrical purpose
Is This Answer Correct ? | 122 Yes | 44 No |
Answer / vidhya
a transformer which consists of one winding alone is common
to both input and output sides is called as autotransformer
Is This Answer Correct ? | 52 Yes | 7 No |
Answer / anil kumar
An Ordinary Transformer consists of two windings called
primary winding and secondary winding.These two windings
are magnetically coupled and electrically isolated. But the
transformer in which a part of windings is common to both
primary and secondary is called Auto Transformer. These two
windings are not only magnetically coupled but also
electrically coupled.The input to the transformer is
constant but the output can be varied by varying the
tappings
Is This Answer Correct ? | 57 Yes | 15 No |
Answer / raja
auto transformer has a different voltage level in the
secondary circuit.
Is This Answer Correct ? | 46 Yes | 9 No |
Answer / shiny ayub
An autotransformer is an electrical transformer with only
one winding. The winding has at least three electrical
connection points called taps. The voltage source and the
load are each connected to two taps. One tap at the end of
the winding is a common connection to both circuits (source
and load). Each tap corresponds to a different source or
load voltage. In an autotransformer a portion of the same
winding acts as part of both the primary and secondary
winding.
Is This Answer Correct ? | 27 Yes | 2 No |
Answer / ayub rahman
The autotransformer has only one winding. In this special
kind of transformer a portion of the winding is common to
both the primary and secondary one.
The principle of operation of the autotransformer is the
same as the one of the common transformer, and then the
relation between input and output voltages and input and
output currents and the ratio of number of turns between
the primary and the secondary winding is the same.
The currents of the primary and secondary windings are
flowing on the opposite directions, so the total current
flowing through the common part of the winding is equal to
the difference between the current on the low-voltage
winding and the current on the high-voltage winding.
In order for an autotransformer to work properly, the two
windings should have the same winding sense.
Is This Answer Correct ? | 18 Yes | 1 No |
Answer / riyaz kamaal
autotransformer is a variable voltage transformer.
Is This Answer Correct ? | 14 Yes | 0 No |
Answer / debika
interconnecting transformer is called auto transformer
Is This Answer Correct ? | 11 Yes | 1 No |
what is High resistance grounding and whatis the criteria for the selection of High resistance grounding
WHY STABILIZER SHOULD USED
what should be the value of proper neutral earthing resistance?
HOW TO CALCULATE THE REGULATION OF 100 AND 25 KVA TRANSFORMER
what type of motor is used in fan
What is BKW of Motor. And what its significance
What is the permissible sound level for 1000kva DG set and how the sound level is calculated.
why motor run slow speed in star connection?explain how?
if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?
for a machine R=130 KVA Y=132 KVA B=144 KVA Then what will be the total kva
what is the different between counterpoise earthing and pipe earthing?
If i switch on a transformer but with no load connected to the secondary path.Is the transformer will burn?