Home
Class 11
PHYSICS
To maintain a rotor at a uniform angular...

To maintain a rotor at a uniform angularspeed of 200 rad `s^(-1)` , an engine needs to transmit a torque of 180 N m. The power required by the engine. Assume that the engine is 100% efficient.

A

36 kW

B

18 kW

C

48 kW

D

72 kW

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • APPENDICES

    AAKASH SERIES|Exercise SYSTEM OF PARTICLES AND ROTATIONAL MOTION (EQUILIBRIUM OF BODY & PARALLEL FORCES)|6 Videos
  • APPENDICES

    AAKASH SERIES|Exercise OSCILLATIONS (EQUATIONS OF SHM)|25 Videos
  • APPENDICES

    AAKASH SERIES|Exercise SYSTEM OF PARTICLES AND ROTATIONAL MOTION (ROTATIONAL DYNAMICS)|26 Videos
  • CALORIMETRY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II) (LECTURE SHEET (ADVANCED)(Matrix Type Questions)|1 Videos

Similar Questions

Explore conceptually related problems

To maintain a rotor at a uniform angular speed or 200 rad s^(-1) an engine needs to transmit a torque of 180 Nm. What is the power required by the engine ? (Note : uniform angular velocity in the absence of friction implies zero torque. In practice, applied torque is needed to counter frictional torque). Assume that the engine is 100% efficient.

Even Carnot engine cannot give 100% efficiency because we cannot

A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with an angular speed of 50" rad s"^(-1) in a uniform horizontal magnetic field of magnitude 3.0 xx10^(-2)T Obtain the maximum and average emf induced in the coil. If the coil forms a closed loop of resistance 100, calculate the maximum value of current in the coil. Calculate the average power loss due to Joule heating. Where does this power come from ?

A car weighing 500 kg climbs up a hill of slope 1 in 49 with a velocity of 36 KMPH. If the frictional force is 50 N, the power delivered by the engine is