Home
Class 12
PHYSICS
What job do the brushes perform in an AC...

What job do the brushes perform in an AC generator?

Text Solution

Verified by Experts

The brushes are useful for passing the current from the armature of the coil to the external load resistance.
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise Revision Exercises ( Additional Questions )|10 Videos

  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise Revision Exercises (Fill in the Blanks )|10 Videos

  • ALTERNATING CURRENT

    MODERN PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS & ADVANCED LEVEL|7 Videos

  • ATOMS

    MODERN PUBLICATION|Exercise Chapter Practice Test|16 Videos

Similar Questions

Explore conceptually related problems

What is an AC generator

AC generator and DC generator.

What is the function of brushes in an electric generator ?

What job does the pupil of the eye do ?

What is meant by form factor of an a.c. generator ?

Of what substance are the brushes of an electric motor made ?

MODERN PUBLICATION-ALTERNATING CURRENT -Revision Exercises ( Very short Annwer Qustion )
  1. What is the natural frequency of LC circuit ? What is the reactance of...

    Text Solution

    |

  2. What is the energy stored in a pure LC circuit ?

    Text Solution

    |

  3. Why connot we use a.c. for electrolysis?

    Text Solution

    |

  4. sqrt(k//m) has dimennsions of which physical quantity?

    Text Solution

    |

  5. What is a transformer ? On what principle the transformer is based ?

    Text Solution

    |

  6. What is a step up transformer?

    Text Solution

    |

  7. What is a step down transformer?

    Text Solution

    |

  8. What is transformation ratio ?

    Text Solution

    |

  9. What happens to the AC current in a transformer if alternating voltage...

    Text Solution

    |

  10. What is the efficiency of a transformer ?

    Text Solution

    |

  11. Why the core of a transformer is made up of a high permeability mater...

    Text Solution

    |

  12. What is the average value of alternate voltage and current in a comple...

    Text Solution

    |

  13. Why cannot a transformer be used to step up d.c. voltage ?

    Text Solution

    |

  14. Name the main component which changes an a.c. generator into d.c. gene...

    Text Solution

    |

  15. What is the instantaneous value of induced emf generated in the coil o...

    Text Solution

    |

  16. What should be the value of sin omegat for induced emf to be maximum ?

    Text Solution

    |

  17. What job do the brushes perform in an AC generator?

    Text Solution

    |

  18. What is a choke coil ?

    Text Solution

    |

  19. What is the resistance of an ideal choke coil ?

    Text Solution

    |

  20. How much power is consumed in a purely inductive and a purely capaciti...

    Text Solution

    |