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(a) A voltmeter with Permanent Magnet Moving Coil (PMMC) instrument of full-scale deflection of 250 µA, and a coll resistance of 1.4 ko is shown Figure Q2 (a). The voltmeter range is 0-20 V. (1) Evaluate the value of the multipliler resistance Re. (i) Calculate the value of shunt resistance needed to convert the voltmeter to an ammeter capable of measuring a current of 20A. PMMC Col resistance Multiplier R resistance

(a) A voltmeter with Permanent Magnet Moving Coil (PMMC) instrument of full-scale deflection of 250 µA, and a coll resistance of 1.4 ko is shown Figure Q2 (a). The voltmeter range is 0-20 V. (1) Evaluate the value of the multipliler resistance Re. (i) Calculate the value of shunt resistance needed to convert the voltmeter to an ammeter capable of measuring a current of 20A. PMMC Col resistance Multiplier R resistance

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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(a) A voltmeter with Permanent Magnet Moving Coil (PMMC) instrument of full-scale deflection of 250 µA, and a coll resistance of 1.4 ko is shown Figure Q2 (a). The voltmeter range is 0-20 V. (1) Evaluate the value of the multipller resistance Re. (i) Calculate the value of shunt resistance needed to convert the voltmeter to an ammeter capable of measuring a current of 20A. PMMC Col resistance Multiplier R resistance R. Figure Q2 (a)
Transcribed Image Text:(a) A voltmeter with Permanent Magnet Moving Coil (PMMC) instrument of full-scale deflection of 250 µA, and a coll resistance of 1.4 ko is shown Figure Q2 (a). The voltmeter range is 0-20 V. (1) Evaluate the value of the multipller resistance Re. (i) Calculate the value of shunt resistance needed to convert the voltmeter to an ammeter capable of measuring a current of 20A. PMMC Col resistance Multiplier R resistance R. Figure Q2 (a)
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