Home
Class 12
PHYSICS
A line having a total resistance of 0.2 ...

A line having a total resistance of `0.2` `omega` delivers `10 KW` at `220 V` to a small factory . Calculate the efficiency of transmission .

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

A line having a total resistance of 0.2Omega delivers 10kW at 220V to a small factory. Calculate the efficiency of the transmission.

A line having a total resistance of 0.5Omega deliver 15kW at 240 V to a small factory . The efficiency of transmission is :

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

A bulb of resistance 400 Omega is connected to 220 V mains. Calculate the magnitude of current.

An electric room heater has a resistance of 25 Omega and operates at 220 V for 12 minutes. Calculate heat energy dissapated by it in kilojoules.

A battery of 20 cells (each having e.m.f. 1.8V and internal resistance 0.1Omega is charged by 220 volts and the charging current is 15A. Calculate the resistance to be put in the circuit.

SL ARORA-HEATING EFFECT OF CURRENT-All Questions
  1. An electric heater consists of 10m long nichrome wire of 2.5xx10^(-6)m...

    Text Solution

    |

  2. The resistances of 20Omega are connected to a source of emf. Calculate...

    Text Solution

    |

  3. A line having a total resistance of 0.2 omega delivers 10 KW at 220 V ...

    Text Solution

    |

  4. A motor operating on 120 V draws a current of 2 A . If the heat is dev...

    Text Solution

    |

  5. A small electric motor is rated 1/8H.P. and is running at 230V supply....

    Text Solution

    |

  6. A 500W electric heater is designed to work with a 200 V line. If the v...

    Text Solution

    |

  7. A 50 W bulb is connected in a 200V line. Determine the current flowing...

    Text Solution

    |

  8. Three equal resistor connected in series across a source of enf toget...

    Text Solution

    |

  9. A room is lighted by 200W,124 V incandescent lamps fed by a generator ...

    Text Solution

    |

  10. An electric heater consists of 20m length of manganin wire of 0.23 m^(...

    Text Solution

    |

  11. Two electric bulbs rated as 100W. 220V and 25W,220V are connected in s...

    Text Solution

    |

  12. Find the cost of electricity for running an electric motor of 1 hp the...

    Text Solution

    |

  13. The heater coil of an electric kettle is rated as 2000W at 200V. How m...

    Text Solution

    |

  14. A copper kettle weighing 1000g holds 1900g of water at 19^(@)C. it tak...

    Text Solution

    |

  15. A 30V storage battery is being charged by 120V d.c. supply. A resistor...

    Text Solution

    |

  16. Calculate the power dissipated in the various resistances and the powe...

    Text Solution

    |

  17. Calculate the rate of productive of heat in the four arms of the Wheat...

    Text Solution

    |

  18. A house is fitted with 10 lamps rated 100W each, four fans each contai...

    Text Solution

    |

  19. Following items are used in a house: What will be the electric bi...

    Text Solution

    |

  20. A house if fitted with a motor of 1 H.P., 5 lamps consuming 0.2 A each...

    Text Solution

    |