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A three-phase, 460 V motor, rated 200 Hp is loaded at 67% of its rating. The motor is 93.2% efficient at this load and operates at a power factor of 0.91 lagging. A wattmeter is placed in the circuit with its current coil connected in the yellow line and its voltage coil connected between the yellow and blue lines. Calculate the power measured by this wattmeter if: a) The motor is star-connected b) The motor is delta-connected. Note: 1 Hp=746 W CS Scanned with CamScanner

A three-phase, 460 V motor, rated 200 Hp is loaded at 67% of its rating. The motor is 93.2% efficient at this load and operates at a power factor of 0.91 lagging. A wattmeter is placed in the circuit with its current coil connected in the yellow line and its voltage coil connected between the yellow and blue lines. Calculate the power measured by this wattmeter if: a) The motor is star-connected b) The motor is delta-connected. Note: 1 Hp=746 W CS Scanned with CamScanner

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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A three-phase, 460 V motor, rated 200 Hp is loaded at 67% of its rating. The motor is 93.2% efficient at this load and operates at a power factor of 0.91 lagging. A wattmeter is placed in the circuit with its current coil connected in the yellow line and its voltage coil connected between the yellow and blue lines. Calculate the power measured by this wattmeter if: a) The motor is star-connected b) The motor is delta-connected. Note: 1 Hp=746 W CS Scanned with CamScanner
Transcribed Image Text:A three-phase, 460 V motor, rated 200 Hp is loaded at 67% of its rating. The motor is 93.2% efficient at this load and operates at a power factor of 0.91 lagging. A wattmeter is placed in the circuit with its current coil connected in the yellow line and its voltage coil connected between the yellow and blue lines. Calculate the power measured by this wattmeter if: a) The motor is star-connected b) The motor is delta-connected. Note: 1 Hp=746 W CS Scanned with CamScanner
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