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Q3: A universal fractional horsepower series motor has a resistance of 30 2 and a total inductance of 0.5 H. When connected to a 250 V d.c. supply and loaded to take 0.8 A, it runs at 2000 r.p.m. Estimate the speed and p.f. when connected to a 250 V a.c. supply and loaded to the same current.

Q3: A universal fractional horsepower series motor has a resistance of 30 2 and a total inductance of 0.5 H. When connected to a 250 V d.c. supply and loaded to take 0.8 A, it runs at 2000 r.p.m. Estimate the speed and p.f. when connected to a 250 V a.c. supply and loaded to the same current.

Introductory Circuit Analysis (13th Edition)
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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Q3: A universal fractional horsepower series motor has a resistance of 30 22 and a total inductance of 0.5 H. When connected to a 250 V d.c. supply and loaded to take 0.8 A, it runs at 2000 r.p.m. Estimate the speed and p.f. when connected to a 250 V a.c. supply and loaded to the same current.
Transcribed Image Text:Q3: A universal fractional horsepower series motor has a resistance of 30 22 and a total inductance of 0.5 H. When connected to a 250 V d.c. supply and loaded to take 0.8 A, it runs at 2000 r.p.m. Estimate the speed and p.f. when connected to a 250 V a.c. supply and loaded to the same current.
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