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Operational Amplifier

The output of a particular Op-amp increases 8V in 12µs. The slew rate is_______________?

August 11, 2021December 23, 2018 by admin
The output of a particular Op-amp increases 8V in 12µs. The slew rate is_______________?

A. 90 V/µs
B. 0.67 V/µs
C. 1.5 V/µs
D. none of these

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Negative feedback_______________?

August 11, 2021December 23, 2018 by admin
Negative feedback_______________?

A. increases the input and output impedances
B. increases the input impedance and bandwidth
C. decreases the output impedance and bandwidth
D. does not affect impedance or bandwidth

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The differential voltage gain of a differential amplifier is equal to RC divided by _______________?

August 11, 2021December 23, 2018 by admin
The differential voltage gain of a differential amplifier is equal to RC divided by _______________?

A. r’e
B. r’e/2
C. 2r’e
D. RE

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The common-mode voltage gain of a differential amplifier is equal to RC divided by _______________?

August 11, 2021December 23, 2018 by admin
The common-mode voltage gain of a differential amplifier is equal to RC divided by _______________?

A. r’e
B. 2r’e
C. r’e/2
D. 2RE

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The common-mode voltage gain is________________?

August 11, 2021December 23, 2018 by admin
The common-mode voltage gain is________________?

A. smaller than differentail voltage gain
B. equal to differential voltage gain
C. greater than differential voltage gain
D. none of the above

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The input impedance of a differential amplifier equals r’e times________________?

August 11, 2021December 23, 2018 by admin
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________________?

August 11, 2021December 23, 2018 by admin
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______________?

August 11, 2021December 23, 2018 by admin
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_____________?

August 11, 2021December 23, 2018 by admin
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_________________?

August 11, 2021December 23, 2018 by admin
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

Categories Operational Amplifier Leave a comment
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