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.Management Sciences
Category: Operational Amplifier
The output of a particular Op-amp increases 8V in 12µs. The slew rate is_______________?
0
A. 90 V/µs
B. 0.67 V/µs
C. 1.5 V/µs
D. none of these
The differential gain is _____________?
A. very high
B. very low
C. dependent on input voltage
D. about 100
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
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
The input stage of an Op-amp is usually a ________________?
A. differential amplifier
B. class B push-pull amplifier
C. CE amplifier
D. swamped amplifier
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
With zero volts on both inputs, an OP-amp ideally should have an output _______________?
A. equal to the positive supply voltage
B. equal to the negative supply voltage
C. equal to zero
D. equal to CMRR
Current cannot flow to ground through _______________?
A. a mechanical ground
B. an a.c. ground
C. a virtual ground
D. an ordinary ground
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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