Maurice Tutor

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Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 6 Days Ago
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 06 Apr 2018 My Price 4.00

speed of the motor

A 240 V, 2 hp, 1200 rpm dc shunt motor drives a load whose torque varies directly as the speed. The armature resistance of the motor is 0:75 Ω. With If = 1 A, the motor draws a line current of 7 A and rotates at 1200 rpm. Assume magnetic linearity and neglect armature reaction effect.

(a) The field current is now reduced to 0:7 A. Determine the operating speed of the motor.

(b) Determine the line current, mechanical power developed, and efficiency for the operating, condition of part (a). Neglect rotational losses.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 06 Apr 2018 03:04 PM My Price 4.00

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