An AC voltmeter uses the circuit shown below, where the PMMC meter has an internal resistance of 500 2 and requires a D.C. current of 1 mA for full scale deflection. Assuming the diodes to be ideal, the value of R, to obtain full scale deflection with 10 V (AC rms) applied to the input terminal would be AC input R$ ww D ▷ PMMC meter

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
Chapter4: Transmission Line Parameters
Section: Chapter Questions
Problem 4.2P: The temperature dependence of resistance is also quantified by the relation R2=R1[ 1+(T2T1) ] where...
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A.C voltmeter.

An AC voltmeter uses the circuit shown below, where the PMMC meter has an internal resistance
of 500 22 and requires a D.C. current of 1 mA for full scale deflection. Assuming the diodes to
be ideal, the value of Rg to obtain full scale deflection with 10 V (AC rms) applied to the input
terminal would be
AC input
Rs
ww
D
▷
+
PMMC
meter
Transcribed Image Text:An AC voltmeter uses the circuit shown below, where the PMMC meter has an internal resistance of 500 22 and requires a D.C. current of 1 mA for full scale deflection. Assuming the diodes to be ideal, the value of Rg to obtain full scale deflection with 10 V (AC rms) applied to the input terminal would be AC input Rs ww D ▷ + PMMC meter
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