The input impedance of a differential amplifier equals r’e times________________?
A. ß
B. Re
C. Rc
D. 2ß
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The node voltage at the top of the til resistor is closes to________________?
A. Collector supply voltage
B. Zero
C. Emitter supply voltage
D. Tail current times base resistance
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The Op-amp can amplify______________?
A. A.c. signals only
B. D.c. signals only
C. Both a.c. and d.c. signals
D. Neither d.c. nor a.c. signals
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A certain noninverting amplifier has Ri of 1 kO and Rf of 100 kO. The closed-loop voltage gain is_____________?
A. 100,000
B. 1000
C. 101
D. 100
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For an Op-amp with negative feedback, the output is_________________?
A. Equal to the input
B. Increased
C. Fed back to the inverting input
D. Fed back to the noninverting input
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Of the values listed, the most realistic value for open-loop voltage gain of an OP-amp is________________?
A. 1
B. 2000
C. 80 db
D. 100,000
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If ADM = 3500 and ACM = 0.35, the CMRR is _______________?
A. 1225
B. 10,000
C. 80 db
D. Answers (a) and (b)
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The common-mode gain is ________________?
A. Very high
B. Very low
C. Always unity
D. Unpredictable
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In differential-mode, ______________?
A. Opposite polarity signals are applied to the inputs
B. The gain is one
C. The outputs are of different amplitudes
D. Only one supply voltage is used
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The differential gain is _____________?
A. Very high
B. Very low
C. Dependent on input voltage
D. About 100
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Word of the Day
16 Sep
Incarcerate
imprison or confine.
قید کرنا، اسیری

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