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
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
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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please remember to draw the circuits

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
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