Home
Class 12
PHYSICS
We can reduce eddy currents in the core ...

We can reduce eddy currents in the core of transformer

A

by increasing the number of turns in secondary coil

B

by taking laminated core

C

by making step-down transformer

D

by using a weak ac at high potential

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY

    NIKITA PUBLICATION|Exercise MCQ|314 Videos
  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

Similar Questions

Explore conceptually related problems

Eddy currents in the core of transformer can't be developed by

Why is the core of a transformer laminated?

Why eddy currents are undesirable in the core of transformers?

Assertion : When a current flows in the coil of a transformer then its core becomes hot. Reason : The core of transformer is made of softiron.

When a current flows in the coil of a transformer, then why does its core become hot ?

Why is soft iron preferred for making the core of a transformer?

We can reduce random errors by

NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. An ideal transformer has 100 turns in the primary and 250 turns in the...

    Text Solution

    |

  2. The alternating voltage induced in the secondary coil of a transformer...

    Text Solution

    |

  3. We can reduce eddy currents in the core of transformer

    Text Solution

    |

  4. A 100% efficient transformer has 100 turns in the primary and 25 turns...

    Text Solution

    |

  5. The efficiency of transfomer is very high because

    Text Solution

    |

  6. In a lossless transformer an alternating current of 2 amp is flowing i...

    Text Solution

    |

  7. A transformer connected to 220 volt line shows an output of 2A at 1100...

    Text Solution

    |

  8. A power transformer is used to step up an alternating e.m.f. of 220 V ...

    Text Solution

    |

  9. A step up transformer connected to a 220V AC line is to supply 22 kV f...

    Text Solution

    |

  10. A transformer is employed to

    Text Solution

    |

  11. The number of turns in the primary coil of a transformer is 200 and th...

    Text Solution

    |

  12. A step-up transformer has transformation ratio of 3:2 what is the volt...

    Text Solution

    |

  13. A step-down transformer is connected to main supply 200V to operate a ...

    Text Solution

    |

  14. Voltage in the secondary coil of a transfomer does not depend upon

    Text Solution

    |

  15. Large transformers, when used for some time, become hot and are cooled...

    Text Solution

    |

  16. In a step-up transformer the voltage in the primary is 220 V and the c...

    Text Solution

    |

  17. A transformer has 100 turns in the primary coil and carries 8A current...

    Text Solution

    |

  18. In a primary coil 5A current is flowing on 220 volts. In the secondary...

    Text Solution

    |

  19. The output voltage of a transformer connected to 220 voltl line is 110...

    Text Solution

    |

  20. Quantity that remains unchanged in a transformer is

    Text Solution

    |