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

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

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.

In the ciruit the cells E_1 and E_2 have emfs of 4V and 8V and internal resistance 0.5 Omega and 1.0 Omega, respectively. Calculate the current through 6 Omega resistance. ltBrgt

A coil has an inductance of 0.7H and is joined in series with a resistance of 220Omega .When an alternating emf of 220V at 50cps is applied to it,then the wattles component of the current in The circuit is (take 0.7 pi=2.2 )

SL ARORA-HEATING EFFECT OF CURRENT-All Questions
  1. Two electric lamps are rated as 220V. 40 W and 220V,60W. Find the heat...

    Text Solution

    |

  2. In a house having 220V line, the following appliances are working : (i...

    Text Solution

    |

  3. How many 60W bulbs may be safely used on 220V line using a 5A fuse?

    Text Solution

    |

  4. An electric heater consists of 10m long nichrome wire of 2.5xx10^(-6)m...

    Text Solution

    |

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

    Text Solution

    |

  6. An electric motor operating on a 30V supply draws a current of 10A and...

    Text Solution

    |

  7. A line having a total resistance of 0.2Omega delivers 10kW at 220V to ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  11. Three equal resistors connected in series across a source of emf toget...

    Text Solution

    |

  12. A room is lighted by 200W, 124V incandescent lamps fed by a genrator w...

    Text Solution

    |

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

    Text Solution

    |

  14. Two wires A and B of same material and mass, have their lengths in the...

    Text Solution

    |

  15. Find the cost of electricity for running an electric motor of 1H.P. fo...

    Text Solution

    |

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

    Text Solution

    |

  17. A 40 V battery of internal resistance 6 Omega is connected to a variab...

    Text Solution

    |

  18. An accumulator of emf epsilon and internal resistance r is first conne...

    Text Solution

    |

  19. A current of 2A is passed through a wire immersed in 80 g of water ini...

    Text Solution

    |

  20. A storage battery of emf 8V, internal resistance 1Omega, is being char...

    Text Solution

    |