AC Generator MCQ

Test your knowledge with important AC Generator MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more AC Generator MCQs at Bissoy

• An a.c. generator consists of a coil of 50 turns and an area 2.5 m2 rotating at an angular speed of 60 rad s-1 in a uniform magnetic field of 0.3 T between two fixed pole pieces. What is the flux through the coil, when the current is zero?
  ক

  Maximum

  খ

  Minimum

  গ

  Zero

  ঘ

  Independent of current
• ‘X’ is a rectangular coil consisting of a large number of turns of copper wire wound over a soft iron core in an a.c. generator. Identify X.
  ক

  Slip ring

  খ

  Armature

  গ

  Copper brushes

  ঘ

  Field magnet
• In an a.c. generator, electrical energy is converted to mechanical energy by electromagnetic induction.
  ক

  True

  খ

  False
• Identify the principle behind the working of an a.c. generator.
  ক

  Eddy currents

  খ

  Faraday’s law

  গ

  Lenz’s law

  ঘ

  Electromagnetic induction
• Adithya peddles a stationary bicycle the pedals of which are attached to a 500 turn coil of area 11 m2. The coil rotates at half a revolution per second and it is placed in a uniform magnetic field of 20.5 T perpendicular to the axis of rotation of the coil. What is the maximum voltage generated in the coil?
  ক

  354035 V

  খ

  85000V

  গ

  111647 V

  ঘ

  46464 V
• A 100 turn coil of area 0.1 m2 rotates at half a revolution per second. It is placed in a uniform magnetic field of 0.01 T perpendicular to the axis of rotation of the coil. Calculate the maximum voltage generated in the coil?
  ক

  256.33 V

  খ

  89.12V

  গ

  0.314 V

  ঘ

  3.1455 V