Home
Class 11
PHYSICS
The power out put of an automobile engin...

The power out put of an automobile engine is advertised to be 200 ap at 6000rpm. What is the corresponding torque?

Text Solution

Verified by Experts

`P=200 hp=200hpxx(746omega)/(1hp)`
`=1.46xx10^(5)omega`
Angular velocity `omega=6000` rev/min
`=6000xx(2pi)/60=100xx2xx3.14`
`=628` rad/sec
Torque `tau=(rho)/(omega)=(1.49xx10^(5))/628`
`=237.5` Nm
Promotional Banner

Topper's Solved these Questions

  • MOTION OF SYSTEM OF PARTICLES AND BODIES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWER (CONCEPTUAL QUESTIONS)|38 Videos
  • LAW OF MOTION

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (VI Numerical Problems)|62 Videos
  • NATURE OF PHYSICAL WORLD AND MEASUREMENT

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (III. Short Answer Questions.)|24 Videos

Similar Questions

Explore conceptually related problems

a. The top of the atmosphere is at about 400 kV with respectto the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about 100 Vm^(-1). Why then do we not get a electric shock as we step out of our house into the openy (Assume the house to be a steel cage so there is no field inside!) b. A man fixes outside his house one evening a two metre high insulating slab carrying on its top a large aluminium sheet of area 1m^(2) . Will he get an electric shock if he touches the metal sheet next morning? c. The discharging current in the atmosphere due to the small conductivity of air is known to be 1800A on an average over the globe. Why then does the atmosphere not discharge itself completely in due course and become electrically neutral? In other words, what keeps the atmosphere charged? d. What are the forms of energy into which the electrical energy of the atmosphere is dissipated during a lightning? (Hint: The earth has an electric field of about 100 Vm^(-1) at its surface in the downward direction, corresponding to a surface charge density =-10^(-9) Cm^(-2) ?.

To maintain a rotor at a uniform angular speed of 200 rad san engine needs to transmit a torque of 180 Nm. What is the power required by the engine? Assume that the engine is 100% cfficient

An electric kettle used to prepare tea, takes 2 minutes to boil 4 cups of water (1 cup contains 200 cc of water) if the room temperature is 25^@ C , (a) If the cost of power consumption is Re 1.00 per unit (1 unit = 1000 watt-hour) , calculate the cost of boiling 4 cups of water. (b) What will be the correspoinding cost if the room temprature drops to 5^@ C ?

What is the power of an engine which can lift 20 metric ton of coal per hour from a mine 30 metres deep ?

A uniform magnetic field of 3000G is established along the positive z-direction. A rect angular loop of sides 10 cm and 5 cm carries a current of 12A. What is the torque on the loop in different cases shown in the figure? What is the force on each case? Which case corresponds to stable equilibrium?

If an automobile engine is overheated, it is cooled by putting water on it. It is advised that the water should be put slowly with engine running. Explain the reason.

If an automobile engine burns petrol at a temperature of 816^(@)C and if surrounding temperature is 21^(@)C ,what is its maximum percentage ?

Every gram of wheat provides 0.1g of proteins and 0.25g of carbohydrates. The corresponding values of rice are 0.05g and 0.5g respectively. Wheat costs Rs 2 per kg and rice Rs 8. The minimum daily requirements of protein and carbohydrates for an average child are 50g and 200g respectively. In what quantities, should wheat and rice be mixed in the daily diet to provide the minimum daily re-quirement of protein and carbohydrates at minimum cost.

PREMIERS PUBLISHERS-MOTION OF SYSTEM OF PARTICLES AND BODIES-OTHER IMPORTANT QUESTIONS & ANSWER (NUMERICAL PROBLEMS)
  1. Adjoining diagram has three disc, inwhcih each has mass M and radius R...

    Text Solution

    |

  2. Two rings have their moemnts of inertia in the ratio of 4:1 and their...

    Text Solution

    |

  3. The power out put of an automobile engine is advertised to be 200 ap a...

    Text Solution

    |

  4. In the following figure radii r1 and r2 are 10 cm and 20 cm respective...

    Text Solution

    |

  5. Find the torque of a corce 7hati-3hatj-5hatk about the origin which a...

    Text Solution

    |

  6. A wheel of mass 8 kg and radius of gyration 25 cm is rotating at 300 r...

    Text Solution

    |

  7. Calculate the moment of inertia of the earth about its diameter taking...

    Text Solution

    |

  8. A body of mass 50 g is revolvig about an axis in a circular path. The ...

    Text Solution

    |

  9. A thin metal hoop of radius 0.25 m and mass 2 kg starts from test and ...

    Text Solution

    |

  10. A torque of 2.0xx10^(-4)Nm is applied to produce an angular accelerati...

    Text Solution

    |

  11. The maximum and minimum distances of a comet from the sun are 1.4xx10^...

    Text Solution

    |

  12. A rod of length L and mass M is hinged at point O. A small bullet of m...

    Text Solution

    |

  13. A bal tied to a sting takes 4 s to complete revolution along a horizon...

    Text Solution

    |

  14. If angular momentum is conserved in a system whose moment of inertia ...

    Text Solution

    |

  15. A star of mass twice the solar mass and radius 10^(6) km rotates about...

    Text Solution

    |

  16. A particle performing uniform circular motion has angular momentum L. ...

    Text Solution

    |

  17. A solid cylinder of mass 20 kg rotates about its axis with angular spe...

    Text Solution

    |

  18. A solid cylinder of mass 20 kg rotates about its axis with angular spe...

    Text Solution

    |

  19. A rope of negligible mass is wound round a hollow cylinder of mass 3 k...

    Text Solution

    |

  20. Keeping the mass of earth constant, if its radius is halved then what ...

    Text Solution

    |