Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Question 1. An industrial load consisting of a set of induction motors connected to a 220 V, 60 Hz single phase source consumes 50 kW with a back power factor of 0.8. The power factor will be increased back to 0.95 by connecting a set of capacitors in parallel. For this, calculate the VA value that the connected capacitor will provide.
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- I need help with this homework question.arrow_forwardchoosearrow_forwardA 3-phase induction motor delivers 74,600 watts while operating at an efficiency of 80 percent and a power factor of 0.75 lagging from a 480 V source. Determine the value of capacitance required per phase to improve the overall power factor to 0.9 lagging.arrow_forward
- A 3-phase, 60 Hz, 2200 V, induction motor develops 500 hp, 0.8 lagging pf and efficiency of 0.94. The power factor is raised to 0.90 lagging by connecting a bank of condensers in delta across the lines. If each of the capacitance unit is built up of four similar 550 V condensers, find the required capacitance of each condenser.arrow_forwardA 400-V, 3-phase induction motor load takes 900 kVA at a power factor of 0.707. Calculate the KVA rating of the capacitor bank to raise the resultant power factor of the installation of 0.866 lagging. Find also the resultant power factor when the capacitors are in circuit and the motor load has fallen to 300 kVA at 0.5 power factor.arrow_forwardThe speed of a 100 MW alternator drops by 4% from no load to full load. (a) Find the speed regulation R of the alternator. (b) If frequency drops by 0.1 Hz, find change in power output.arrow_forward
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