C1 (i). The output of the 3-phase, 410 V induction motor is 15 kW and operates at power factor of 0.7 lagging with an efficiency of 81 %. Calculate the reading on each of the two wattmeter connected to measure the input. The value of P1 The value of P2

C1 (i). The output of the 3-phase, 410 V induction motor is 15 kW and operates at power factor of 0.7 lagging with an efficiency of 81 %. Calculate the reading on each of the two wattmeter connected to measure the input. The value of P1 The value of P2

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 79A

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Question

Answer only for c1 (i)

C1 (i). The output of the 3-phase, 410 V induction motor is 15 kW and operates at power factor of
0.7 lagging with an efficiency of 81 %. Calculate the reading on each of the two wattmeter
connected to measure the input.
The value of P1
The value of P2
C1 (ii). Three Identical capacitors are connected in star to 415 Volts, F = 50 Hz, 3 phase supply. If
the line current is 12 A. Calculate its reactance and capacitance value.
Reactance Xc
The capacitance of each capacitor, C

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