Maurice Tutor

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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 21 Mar 2018 My Price 4.00

steady-state values

A separately excited dc motor has the following parameters: Ra = 0.5 Ω, La ≅ 0, and B ≅ 0. The machine generates an open-circuit armature voltage of 220 V at 2000 r/min, and with a field current of 1.0 A. The motor drives a constant load torque TL = 25 N·m. The combined inertia of motor and load is J = 2.5 kg·m2. With field current If = 1.0 A, if the armature terminals are connected to a 220-V dc source:

(a) Obtain expressions for speed ωm and armature current ia as functions of time.

(b) Find the steady-state values of speed and armature current.

 

 
 

Answers

Maurice Tutor
(5)
Status NEW Posted 21 Mar 2018 03:03 AM My Price 4.00

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