IT KING

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Teaching Since: Apr 2017
Last Sign in: 453 Weeks Ago, 3 Days Ago
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Education

  • MSC,MBA(IT)
    Standford
    Jun-1997 - Sep-2000

Experience

  • IT Manager
    Honeywell
    Aug-2001 - Present

Category > Applied Sciences Posted 05 May 2017 My Price 7.00

The resistance measured

The resistance measured between each pair of slip rings of a three-phase, 60-Hz, 250-kW, 16-pole, wound-rotor induction motor is 49 mΩ. With the slip tings short-circuited, the full-load slip is 0.041. For the purposes of this problem, it may be assumed that the slip-torque curve is a straight line from no load to full load. The motor drives a fan which requires 250 kW at the full-load speed of the motor. Assuming the torque to drive the fan varies as the square of the fan speed, what resistance should be connected in series with the rotor resistance to reduce the fan speed to 400 r/min?

Answers

IT KING
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Status NEW Posted 05 May 2017 12:05 PM My Price 7.00

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