12346.Question 5A 460V, 1250rpm, 30hp DC shunt motor, operating at rated conditions is to bedynamically braked by disconnecting the armature from the supply and connecting itacross a 1.15 2 braking resistor. The motor has negligible armature resistance.Draw a complete schematic of the motor in the braking state. Label all components and show allrelevant given quantities.Determine the following:(i)The value (exact) of armature braking current(ii)The initial braking torquevestigate 2346(ii)The braking power and torque when the motor speed is 250rpmThe approximate time for the motor to come to a stop (from 1250 rpm) if the momentof inertia of the motor and connected loads is 125 kgm2.(iv)The approximate time for the motor to come to a stop if it was plugged instead ofdynamically braked. Assume a 230V supply and the same value of brake resistanceand moment of inertia of the motor and connected loads.(v)

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A 460V, 1250rpm, 30hp DC shunt motor, operating at rated conditions is to be dynamically braked by disconnecting the armature from the supply and connecting it across a 1.15 2 braking resistor. The motor has negligible armature resistance. Draw a complete schematic of the motor in the braking state. Label all components and show all relevant given quantities.

A 460V, 1250rpm, 30hp DC shunt motor, operating at rated conditions is to be dynamically braked by disconnecting the armature from the supply and connecting it across a 1.15 2 braking resistor. The motor has negligible armature resistance. Draw a complete schematic of the motor in the braking state. Label all components and show all relevant given quantities.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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