An op-amp has a differential voltage gain of 2000 and a CMRR of 20000. A single-ended input signal of 250 µVrms is applied and a 0.5Vrms, 50 Hz common-mode noise signal appears on both inputs from the ac power line. Calculate the output voltage. (A) 0.5 Vrms B) 0.7 Vrms 0.75 Vrms (D) 1.5 Vrms

An op-amp has a differential voltage gain of 2000 and a CMRR of 20000. A single-ended input signal of 250 µVrms is applied and a 0.5Vrms, 50 Hz common-mode noise signal appears on both inputs from the ac power line. Calculate the output voltage. (A) 0.5 Vrms B) 0.7 Vrms 0.75 Vrms (D) 1.5 Vrms

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

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.3P

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Question

An op-amp has a differential voltage gain of 2000 and a CMRR of 20000. A single-ended
input signal of 250 µVrms is applied and a 0.5Vrms, 50 Hz common-mode noise signal
appears on both inputs from the ac power line. Calculate the output voltage.
...
A
0.5 Vrms
B) 0.7 Vrms
c) 0.75 Vrms
D) 1.5 Vrms

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