An RLC circuit is connected across a variable frequency, 110-volt source. When the frequency is varied, the maximum effective (rms) value of the current is 5.6 A and occurs at 45 Hz frequency. At this frequency, the voltage across the capacitor is 200.8 volts. Determine the power factor of the circuit at 60 Hz.

An RLC circuit is connected across a variable frequency, 110-volt source. When the frequency is varied, the maximum effective (rms) value of the current is 5.6 A and occurs at 45 Hz frequency. At this frequency, the voltage across the capacitor is 200.8 volts. Determine the power factor of the circuit at 60 Hz.

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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Concept explainers

Types of Thyristors

With four layers of alternating P- and N- materials, a thyristor is a solid-state semiconductor device. It acts as a type of bi-stable switch and it conducts when the gate receives a current trigger and continues to conduct until the voltage is reverse biased across the device or by some means until the voltage is removed. The silicon-controlled rectifier is considered synonymous with thyristors by some sources. Thyristors are defined as more complex by other sources as it contains at least four-layer of alternating N-type and P-type substrate. They find large applications in the control of electrical power supplies, electric motor speed control, and ranging of light dimmers because thyristors can control large amounts of power supplies and voltage with a small device. The circuit symbol of the thyristor is given below.

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2. An RLC circuit is connected across a variable frequency, 110-volt source. When the
frequency is varied, the maximum effective (rms) value of the current is 5.6 A and
occurs at 45 Hz frequency. At this frequency, the voltage across the capacitor is
200.8 volts. Determine the power factor of the circuit at 60 Hz.

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