A 230 V, 50 Hz single-phase induction motor takes a current of 25 A at a PF of0.45 lagging. Calculate the value of capacitor required to correct the PF to 0.9lagging.

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30 V, 50 Hz single-phase takes a 0.45 lagging. Calculate the value of capacitor required to correct the PF to 0 lagging.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

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Concept explainers

Multistage Amplifier

The multistage amplifier is generally a voltage or power amplifier. The multistage amplifier has a number of single stage amplifier that are cascaded together. Since a single stage amplifier output is not useful, they are being replaced with multistage amplifiers or multistage transistor amplifiers. The multistage amplifier are used where the gain required is high or the input signal is very small such that only a single stage amplifier cannot amplify it.

Question

A 230 V, 50 Hz single-phase induction motor takes a current of 25 A at a PF of
0.45 lagging. Calculate the value of capacitor required to correct the PF to 0.9
lagging.

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