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A 75-hp, 850 r/min, 500-V series motor has an efficiency of 90.2 percent
when operating at rated conditions. The series field has 30 turns/pole, and
the motor parameters are:

Armature
0.1414 ohms

IP + CW
0.0412 ohms

Series
0.0189 ohms

Resistance,

The motor has a maximum safe speed of 1700 r/min. Is it safe to operate the
motor with a 10-hp shaft load? Use the magnetization curve in Figure
11.16, and show all work. Neglect changes in windage and friction

A 75hp 850 Rmin 500V Series Motor Has An Efficiency Of 902 Percent When Operating At Rated Conditions The Series Field Has 30 Turnspole And The Motor Parameters class=

Sagot :

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