Answered: A 250 V dc shunt motor has an armature…

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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Question

A 250 V dc shunt motor has an armature resistance of 0.2 Ω and a field resistance of
100 Ω. When the motor is operated on no-load at rated voltage. It draws an armature
current of 5 A and runs at 1200 rpm. When a load is coupled to the motor, it draws
total line current of 50 A at rated voltage, with a 5 % reduction in the air-gap flux due
to armature reaction. Voltage drop across the brushes can be taken as 1 V per brush
under all operating conditions. The speed of the motor, in rpm, under this loaded
condition, is closest to:

Pointer - Make a pointer pointing to 8 64 bit, or 8 byte, integers.
a. Put the following 8 numbers: 65536, 78890, 12345, 98765, 87906, 45637,
863248, 4632768 consecutively, one after the other, into the memory pointed to
by the pointer.
b. Once the pointer points to these 8 numbers, print them out.
c. Print the addresses of these numbers.
d. Reallocate memory, to add 4 more 64 bit integers: 768, 765, 92034, 65789

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