Home
Class 12
PHYSICS
Can a trasnformer be helpful in reducing...

Can a trasnformer be helpful in reducing the cost of transmission of electrical energy to long distances? Explain.

Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENTS

    MODERN PUBLICATION|Exercise EXERCISE|201 Videos

  • CAPACITOR

    MODERN PUBLICATION|Exercise EXAMPLE|262 Videos

Similar Questions

Explore conceptually related problems

What is the principle of a transformer ? Explain the theory and its application for long distance transmission of electrical energy.

Describe the use of transformer for long distance transmission of a.c.

How can you help in reducing the problKHO of waste disposal?Give any two methods.

What is the meaning of the terms frequency of an altrnating current? What is its value in India? Why is an alternating current considered to be advntageous over direct current for long range transmission of electric energy?

One use of a capacitor is for the storage of electrical energy. Briefly explain how a capacitor stores energy.

A family uses 8 kW of power:- Direct solar energy is incident on the horizontal surface at an average rate of 200 W per square meter. If 20% of this energy can be converted to useful electrical energy, how large an area is needed to supply 8 kW?

Sound can be heard over a long distance on a rainy day. Why?

MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
  1. Describe the use of transformer for long distance transmission of a.c.

    Text Solution

    |

  2. A transformer of 100% efficiency has 500 turns in the primary and 10,0...

    Text Solution

    |

  3. Can a trasnformer be helpful in reducing the cost of transmission of e...

    Text Solution

    |

  4. What is the fucntion of a choke coil in fluorescent tube?

    Text Solution

    |

  5. Show that an ideal inductor does not dissipate power in an ac circuit.

    Text Solution

    |

  6. Answer the following questions: Why is choke coil needed in the use of...

    Text Solution

    |

  7. Why is choke preferred to rheostat in controlling a.c. supply.

    Text Solution

    |

  8. Which of the best method of reducing current in an a.c. circuit and wh...

    Text Solution

    |

  9. Why choke coil cannot be used in d.c.?

    Text Solution

    |

  10. Radio frequency choke is air cored, whereas as audio frequency choke i...

    Text Solution

    |

  11. Find r.m.s value of voltage give in the figure.

    Text Solution

    |

  12. The variation with time t of the output E of an alternating voltage su...

    Text Solution

    |

  13. The variation with time t of the output E of an alternating voltage su...

    Text Solution

    |

  14. In the circuit shows find the phase difference between the currents th...

    Text Solution

    |

  15. In the circuit shows find the phase difference between the potential d...

    Text Solution

    |

  16. Can a capacitor of suitable capacitance replace a choke coil in an ac ...

    Text Solution

    |

  17. What do you mean by the average value of a.c. ? Derive the expression ...

    Text Solution

    |

  18. What is meant by average value of alternating current? Obtain an expre...

    Text Solution

    |

  19. What is meant by mean or average value of alternating current ? Show t...

    Text Solution

    |

  20. Define root mean square value of an alternating current.

    Text Solution

    |