Home
Class 11
PHYSICS
The power output of an antomobile engine...

The power output of an antomobile engine is advertised to be 200 at 6000 rpm. What is the corresponding torque ?

Text Solution

Verified by Experts

`P=200 "hp" =200 "hp" xx(746)/("1 hp")=1.49xx10^(5)W`
and `omega_(z)=6000 "rev/min" =6000 xx(2pi)/(60)=628 "rad/s"`
`tau=(P)/(omega)=(1.49xx10^(5))/(628)=237.5 "Nm"`.
Promotional Banner

Topper's Solved these Questions

  • ROTATION

    DC PANDEY|Exercise Check point 9.1|20 Videos
  • ROTATION

    DC PANDEY|Exercise Check point 9.2|20 Videos
  • RAY OPTICS

    DC PANDEY|Exercise Integer type q.|15 Videos
  • ROTATIONAL MECHANICS

    DC PANDEY|Exercise Subjective Questions|2 Videos

Similar Questions

Explore conceptually related problems

The power output of an engine is 3 kW. How much work does the engine do in 20 s ?

If the power of any engine is 1HP, then what does it means ?

A uniform disc of mass 500 kg and radius 2 metres is rotating at the rate of 600 rpm. What is the torque required to rotate the disc in the opposite direction with the same speed in a time of 100 seconds?

A source of electric current with an emf in_o and an Internal resistance r is connected to an external circuit with a resistance R. What must be the relationship between rand R for the power output in the external circuit to be maximal? What is the efficiency of the current source in this case, provided Lhat the power output in the external circuit is assumed to be the useful out put?

To mainntain a rotor at a uniform angular speed of 200 s^(-1) , an engine needs to transmit a torque of 180 N-m . What is the power of the engine required ?

To maintain a rotor at a uniform angular speed of 100 rads^(-1) an engine needs to transmit a torque of 200 Nm. What is the power required by engine ? Assume 100 % efficiency of engine.

The angular speed of a moton wheel is increased from 1200 rpm to 3120 rpm in 16 seconds. (i) What is the angular acceleration, assuming the acceleration to be uniform ? (ii) How many revolutions does the engine make during this time ?

The power output of a double speaker at a frequency of 60 Hz is 50 W.At a frequency of 90 Hz, the intensity of sound is 20 dB higher.What is the power output at 90 Hz ?

DC PANDEY-ROTATION-(C) Chapter Exercises
  1. The power output of an antomobile engine is advertised to be 200 at 60...

    Text Solution

    |

  2. A wheel of radius 10 cm can rotate freely about its centre as shown in...

    Text Solution

    |

  3. From a disc of radius R and mass M, a circular hole of diameter R, who...

    Text Solution

    |

  4. A disc and a solid sphere of same radius but different masses roll off...

    Text Solution

    |

  5. A uniform circular disc of radius 50 cm at rest is free to turn about ...

    Text Solution

    |

  6. A mass m moves in a circles on a smooth horizontal plane with velocity...

    Text Solution

    |

  7. Three identical spherical shells each of mass m and radius r are place...

    Text Solution

    |

  8. A uniform metallic rod rotates about its perpendicular bisector with ...

    Text Solution

    |

  9. A massless rod S having length 2l has equal point masses attached to i...

    Text Solution

    |

  10. A particle travels in a circle of radius 20 cm at a uniformly increasi...

    Text Solution

    |

  11. A solid sphere of radius r r is rolling on a horizontal surface. The r...

    Text Solution

    |

  12. If two circular discs A and B are of same mass but of radii r and 2r r...

    Text Solution

    |

  13. Choose the wrong statement.

    Text Solution

    |

  14. Two particle A and B are moving as shown in the figure Their tota...

    Text Solution

    |

  15. A rod of mass 5 kg is connected to the string at point B. The span of ...

    Text Solution

    |

  16. A particle moves with a constant velocity parallel to the X-axis. Its ...

    Text Solution

    |

  17. A ring of radius 0.5 m and mass 10 kg is rotating about its diameter w...

    Text Solution

    |

  18. A uniform sphere of mass 500 g rolls without slipping on a plane surfa...

    Text Solution

    |

  19. A rotating wheel changes angular speed from 1800 rpm to 3000 rpm in 20...

    Text Solution

    |

  20. The moment of inertia of ring about an axis passing through its diamet...

    Text Solution

    |

  21. Two bodies have their moments of inertia I and 2I, respectively about ...

    Text Solution

    |