how would you come to know if a transformer is double wound or auto? note that

Categories >> Engineering >> Electrical Engineering
Suggest New Category

how would you come to know if a transformer is double wound
or auto? note that there is no tag. you are given only a
multimeter.

Question Posted / vibha

5 Answers
15979 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

how would you come to know if a transformer is double wound or auto? note that there is no tag. y..

Answer / n n mohanta

In auto transformer there will be continuity between in
coming supply and out going supply side whereas there is no
continuity between incoming and outgoing incase of double
wound transformer.

Is This Answer Correct ?

23 Yes

3 No

how would you come to know if a transformer is double wound or auto? note that there is no tag. y..

Answer / kishore

EXACTLY AS IN CASE OF AUTOTRANSFORMER SOME PART OF THE
PRIMARY WINDING IS MADE AS SECONDARY WINDING ...THERE IS NO
ELECTRICAL ISOLATION AS IN CASE OF TWO WINDING HERE

Is This Answer Correct ?

11 Yes

0 No

how would you come to know if a transformer is double wound or auto? note that there is no tag. y..

Answer / matthew

On an autotransformer there is a physical connection
between the primary and secondary and the voltage variation
is not much so the resistence steps are less. The opposite
is true for double wound transformer.

Is This Answer Correct ?

7 Yes

0 No

how would you come to know if a transformer is double wound or auto? note that there is no tag. y..

Answer / k.babu

we can find with the help of Variable voltage seleter Knob

Is This Answer Correct ?

7 Yes

2 No

how would you come to know if a transformer is double wound or auto? note that there is no tag. y..

Answer / ogeerster

WEll in an autotransformer the primary and secondary windings are electrically connected. So if an open circuit takes place across the secondary winding, the primary voltage shows in the secondary winding. (test it for yourself)

While in a double wound transformer, the primary and secondary windings are not electrically connected, so if an open circuit across the secondary winding occurs, the secondary winding will not be affected.

I hope i have helped.
Regards
Aaron Ogeer
Certified City+Guilds Electrical Technician.

Is This Answer Correct ?

4 Yes

3 No

Post New Answer

More Electrical Engineering Interview Questions

What is an Air COmpressor

0 Answers DLF,

If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

0 Answers

why transformer rating is in kva?

11 Answers

In winter we seem lightly an electric shock when we touch to doors(sometime)