A single-phase motor takes 10A at a power factor of 0.7 lagging when connected to a 230V, 50 Hz supply. A capacitor bank is connected in parallel with the motor to raise the power factor to unity. i) Draw the phasor diagram before and after power factor correction with the supply voltage taken as the reference phasor. ii) Calculate the percentage change in the supply current after power factor correction. iii) Calculate the value of capacitance required.
A single-phase motor takes 10A at a power factor of 0.7 lagging when connected to a 230V, 50 Hz supply. A capacitor bank is connected in parallel with the motor to raise the power factor to unity. i) Draw the phasor diagram before and after power factor correction with the supply voltage taken as the reference phasor. ii) Calculate the percentage change in the supply current after power factor correction. iii) Calculate the value of capacitance required.
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.21P: An industrial plant consisting primarily of induction motor loads absorbs 500 kW at 0.6 power factor...
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A single-phase motor takes 10A at a power factor of 0.7 lagging when connected to a 230V,
50 Hz supply. A capacitor bank is connected in parallel with the motor to raise the power
factor to unity.
i) Draw the phasor diagram before and after power factor correction with the supply
voltage taken as the reference phasor.
ii) Calculate the percentage change in the supply current after power factor correction.
iii) Calculate the value of capacitance required.
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