Home
Class 12
PHYSICS
An electric power station ( 100 MW) tran...

An electric power station ( 100 MW) transmits power to a distant load through long and thin cables. Which of the two modes of transmission would result in lessere power wastage : Power transmission of : (i) 20,000 V or (ii) 200 V?

Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC FORCES, CHARGES AND FIELDS

    SL ARORA|Exercise Problems For Self Practice|1 Videos

  • MAGNETIC EFFECTS OF CURRENT

    SL ARORA|Exercise TYPE C|4 Videos

Similar Questions

Explore conceptually related problems

An electric power station (100MW) transmits power to a distant load through long and thin cables. Which of the two modes of transmission would result in lesser power wastage: transmission of: (i) 20,000 V or (ii) 200V?

11 kW of electric power can be transmitted to a distant station at (i) 220 V (ii) 22000 V. Which of the two transmission modes be preferred and why ? Support your answer with calculations.

A: Electrical power through transmission lines is transmitted at high voltage. R: At high voltage theft of power is checked.

An electrical power line, having a total resistance of 2Omega , delivers 1kW at 220 V. The efficiency of the transmission line is approximately :

An electric bulb is rated 200 V and 100 W. When it is operated on 110V, the power consumed will be:

Two electric appliances of power rating W_(1) and W_(2) t 240 V are connected in parallel with a source of alternating voltage e=240sqrt(2)sinomegat . The resultant power consumed is

Two electric appliances of power rating W_(1) and W_(2) at 220 V are connected in series with a source of alternating voltage e=220sqrt(2)sin omegat . The resultant power consumed is

SL ARORA-HEATING EFFECT OF CURRENT-All Questions
  1. An electric motor operating on a 50 V dc supply draws a current of 12...

    Text Solution

    |

  2. Which of the two has greater resistance : a 1kW heater or a 100W tungs...

    Text Solution

    |

  3. An electric power station ( 100 MW) transmits power to a distant load ...

    Text Solution

    |

  4. A generator is supplying power to a factory by cables of resistance ...

    Text Solution

    |

  5. One kilowatt electric heater is to be used with 220V d.c. supply. (i) ...

    Text Solution

    |

  6. Two ribbons are gien with the following particulars: For a fixed ...

    Text Solution

    |

  7. A 100W-220V bulb is connected to 110 V source. Calculate the power con...

    Text Solution

    |

  8. A heater coil is rated 100W,200V. It is cut into two identical parts. ...

    Text Solution

    |

  9. An electric bulb is marked 100W, 230V. If the supply voltage drops to ...

    Text Solution

    |

  10. By what percentage will the illimination of the lamp decrease if the c...

    Text Solution

    |

  11. An electric bulb rated for 500 W at 100 V is used in a circuit having ...

    Text Solution

    |

  12. The maximum power rating of a 20 Omega resistor is 2.0 kW. [That is, t...

    Text Solution

    |

  13. A 25W and 100W bulbs are joined in series and connected to the mains. ...

    Text Solution

    |

  14. An electric bulb and electric heater are rated 100 W,220 V and 500 W,...

    Text Solution

    |

  15. Two heaters are marked 200V, 300W and 200 V, 600 W. If the heaters are...

    Text Solution

    |

  16. Three identical resistors, each of resistance R, when connected in ser...

    Text Solution

    |

  17. The resistance of each of the three wires joined as shown in figure is...

    Text Solution

    |

  18. Find the heat produced per minute in each of the resistors shown in fi...

    Text Solution

    |

  19. A 2H.P. electric motor working on 220V mains runs for 6hours a day. If...

    Text Solution

    |

  20. A house is fitted with 20 length of 60 watt each 10 fans consuming 0....

    Text Solution

    |