9 September 2017

Principle of DC Generator

  • It is an electrical machine which converts mechanical energy into electrical energy.
  • The principle of operation of the dc generator is based on dynamically induced emf. 
  • Whenever a rotating conductor cuts magnetic flux, dynamically induced emf is produced in it according to the Faraday's law of electromagnetic induction.

principle of dc generator

  • The magnitude of induced emf is given by
             e = BLVsin θ
        Where
             B = Flux density ( Weber / meter2 or Tesla )
             L = Length of conductor ( meter )
             V = Velocity of conductor movement ( meter /second )
              θ = Angle between flux line and direction of conductor movement. Obviously
             Therefore the induced emf e = 0 for θ = 0° and  e = Maximum for θ = 90°
  • It means that when the conductor motion is parallel to the line of magnetic flux, the induced emf is zero whereas when the conductor motion is perpendicular to the line of magnetic flux, induced emf is maximum. 
  • The direction of the induced emf is found out by Fleming’s right hand rule.
Fleming's Right hand rule
  • It states that "Hold the right hand such that the thumb, first finger and middle finger are mutually perpendicular. If the thumb indicates - direction of motion of conductor and first finger indicates - direction of magnetic field, the middle finger shows the direction of induced emf.

fleming right hand rule


You man also like :






3 comments:

  1. Very nice post here and thanks for it .I always like and such a super contents of these post.Excellent and very cool idea and great content of different kinds of the valuable information's.

    ReplyDelete
  2. We recommend placing a portable generator atop a concrete pad which rests at least 15 feet from all residences or buildings. Ideally a small roof should cover the pad, leaving a minimum of three feet of clearance on all sides of the generator for ventilation purposes.https://generatorguides.net/

    ReplyDelete
  3. On this page you can read my interests, write something special. iPhones outright

    ReplyDelete