• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

How Engineering Works

  • Home
  • MCQ
    • Electrical MCQ
    • Civil MCQ
    • Mechanical MCQ
  • Interview Questions
  • About Us
  • Privacy Policy
  • Disclaimer
  • Contact Us

Auto transformer, what are its use in a substation?

November 25, 2017 by bheema

DWQA Questions › Category: Transformer › Auto transformer, what are its use in a substation?
0 Vote Up Vote Down
bheema asked 6 years ago
3 Answers
0 Vote Up Vote Down
Dheeraj answered 6 years ago

Auto transformers are often used in substations for step up/step down where the ratio of high to low voltage is small (less than 4). These are used because they are significantly smaller than a wye/wye, which translates into cost savings.

0 Vote Up Vote Down
keeju answered 6 years ago

An Auto Transformer is a transformer with only one winding wound on a laminated core. An auto transformer is similar to a two winding transformer but differ in the way the primary and secondary winding are interrelated. A part of the winding is common to both primary and secondary sides. On load condition, a part of the load current is obtained directly from the supply and the remaining part is obtained by transformer action. An Auto transformer works as a voltage regulator.

0 Vote Up Vote Down
refas answered 6 years ago

Auto transformer is kind of electrical transformer where primary and secondary shares same common single winding. So basically it’s a one winding transformer.

It is used to compensate voltage drops by boosting supply voltage in distribution systems.

Auto transformers are often used in substations for step up/step down where the ratio of high to low voltage is small (less than 4). These are used because they are significantly smaller than a wye/wye, which translates into cost savings.

Primary Sidebar

Related Questions

  • Why does a transformer work for AC and not DC? asked by admin
  • What are the applications of wireless power transformer? asked by
  • What is the meaning of full load for transformer? asked by
  • Why are auto-transformers used in high voltage transmission lines instead of power transformers? asked by

INTERVIEW QUESTIONS

MCQ or Objective


Recommended Post

MCQ on DC Generator – 1

Universe MCQ

MCQs on Transmission and Distribution

MCQs on Induction Motor

MCQ on Alternator – 3

Categories



Join Our Whatsapp Group


About Us | Privacy Policy | Disclaimer


Copyright@ Since-2017