Home
Class 11
PHYSICS
In a hydel power project, 2000 kg of wat...

In a hydel power project, 2000 kg of water passes through the turbine every second. Water is falling from a height of 240 m above ground. If the power output is 3.6 MW, the efficiency of the power house is `(g=10 ms^(-2))`

A

`60%`

B

`75%`

C

`80%`

D

`90%`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WORK POWER ENERGY

    AAKASH SERIES|Exercise EXERCISE - 2|107 Videos

  • WORK -POWER-ENERGY

    AAKASH SERIES|Exercise PRACTICE SHEET (ADVANCED) (STRAIGHT OBJECTIVE TYPE QUESTIONS)|36 Videos

  • WORK, POWER & ENERGY

    AAKASH SERIES|Exercise PRACTICE EXERCISE (PERFECTLY INELASTIC COLLISIONS)|5 Videos

Similar Questions

Explore conceptually related problems

A ball is projected vertically down with a velocity of 10sqrt(3) m//s from a height of 20 m. On hitting the ground if it loses 40 % of its energy, the height to which it bounces is (g = 10 ms^(-2))

A motor pump lifts water from an average depth of 15 m at the rate of 5 kg per second. If the water is coming out of the pump with a velocity of 4 ms^(-1) , the power of the motor is (g = 10ms^(-1))

A motor is used to lift water from a well of depth 10m and to fill a water tank of volume 30m^(3) in 10 minutes. The tank is at a height of 20m above ground. If 20% of energy is wasted, the power of the motor is

AAKASH SERIES-WORK POWER ENERGY-EXERCISE - 3
  1. A variable force, given by the 2-dimensional vector vec(F)=(3x^(2)hat(...

    Text Solution

    |

  2. Power applied to a particle varies with time as P=(3t^(2)-2t+1) watt, ...

    Text Solution

    |

  3. In a hydel power project, 2000 kg of water passes through the turbine ...

    Text Solution

    |

  4. A body is moving under the expense of a constant power. If .X. is the ...

    Text Solution

    |

  5. A car moves up as hill of incline 1 in 50 with a velocity of 15 KMPH. ...

    Text Solution

    |

  6. Human heart pumps 70 cc of blood at each beat against a pressure of 12...

    Text Solution

    |

  7. An air pump is pumping air in to a a large vessel against a pressure o...

    Text Solution

    |

  8. A machine rated as 150W, changes the velocity of a 10 kg mass from 4ms...

    Text Solution

    |

  9. Find the power of an engine which can draw a train of 400 metric ton u...

    Text Solution

    |

  10. A body is initially at rest. It undergoes one - dimensional motion wit...

    Text Solution

    |

  11. A force F acting on a body depends on its displacement s as F alpha s^...

    Text Solution

    |

  12. An air compressor is powered by a 200 rad/s electric motor using a V-b...

    Text Solution

    |

  13. A body is revolving in a vertical circle with constant mechanical ener...

    Text Solution

    |

  14. A particle suspended by a thread of length .l. is projected horizontal...

    Text Solution

    |

  15. A simple pendulum bob is given a horizontal velocity sqrt((7)/(2)gl) a...

    Text Solution

    |

  16. A small glass marble of mass .m. oscillates between the two edges, ins...

    Text Solution

    |

  17. A mass .m. is released, with a horizontal speed v from the top of a sm...

    Text Solution

    |

  18. A mass of 3.9 kg suspended from a string of length 0.5 m is at rest. A...

    Text Solution

    |

  19. A stone is tied to a rope is rotated in a vertical circle with uniform...

    Text Solution

    |

  20. Two steel spheres approach each other headon with the same speed and c...

    Text Solution

    |