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

How Engineering Works

  • Home
  • About Us
  • Electrical Engineering
    • Interview Questions
  • Privacy Policy
  • Disclaimer
  • Contact Us
  • Blog

What would happen if a transformer is connected to a DC supply?

September 18, 2017 by Sunil

DWQA Questions › Category: Transformer › What would happen if a transformer is connected to a DC supply?
0 Vote Up Vote Down
Sunil asked 5 years ago
4 Answers
0 Vote Up Vote Down
Ravi answered 5 years ago

The primary winding of a transformer is nothing but an inductor, so at DC, it will work as a node.
So there are possibility to blow up the primary winding and the DC source for flowing high amount of current.
Although, the secondary coil needs to see change in flux, there will no alternation so there will be no output. Hence, the transformer will not work.

0 Vote Up Vote Down
Atul answered 5 years ago

When transformer is connected to dc supply, steady state current start flowing through the winding. in case of dc supply self inductance is zero hence large current flows through the primary winding which results transformer get damaged.

0 Vote Up Vote Down
sandeep answered 5 years ago

If DC supply is given to the primary of Transformer then DC current flows through primary winding which is constant (time invarient).For production of emf in any winding the current flowing through that must be sinusoidal since

e=L*(dI/dt).

So in the given case ie, for DC INPUT :
No emf produced in primary winding. So net voltage in the primary winding will be (Vin-0) more due to which primary winding draws more current which leads to burning of winding.

1 2 Next »

Primary Sidebar

Related Questions

  • Why do we short circuit a current transformer? asked by
  • Why core loss is constant in a transformer? asked by
  • Can a 60Hz transformer work on a 50Hz system? Why? asked by
  • What will happen when power factor is leading in distribution of power? asked by admin

INTERVIEW QUESTIONS

MCQ or Objective





Recommended Post

MCQs on Induction Motor

MCQs on DC Machine

EMF or Electromotive Force

MCQ on Power electronics – 1

MCQs on Induction Motor

Categories

  • Electrical Articles (19)
  • Electrical MCQ (75)
  • Electrical Questions (11)
  • Interviews Questions (7)
  • IQ Test (1)
  • Uncategorized (12)

Join Our Whatsapp Group


About Us | Privacy Policy | Disclaimer


Copyright@2017-2022