A Best Way To Crack Gorenment Job Exams

Technical Mcqs Objective Questions { Operational Amplifiers }



8. How many logic states does an S-R flip-flop have?
A. 2
B. 3
C. 4
D. 5
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9. The Schmitt trigger is a two-state device that is used for:
A. pulse shaping
B. peak detection
C. input noise rejection
D. filtering
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10. When a capacitor is used in place of a resistor in an op-amp network, its placement determines:
A. open- or closed-loop gain
B. integration or differentiation
C. saturation or cutoff
D. addition or subtraction
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11. What is the difference between common-mode and differential-mode input signals?
A. phase relationship
B. voltage
C. current
D. apparent power
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12. The magnitude of closed-loop voltage gain (Acl) of an inverting amplifier equals:
A. the ratio of the input resistance to the feedback resistance
B. the open-loop voltage gain Aol
C. the feedback resistance divided by the input resistance
D. the input resistance
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13. An ideal amplifier should have:
A. high input current
B. zero offset
C. high output impedance
D. moderate gain
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14. A differential amplifier has a common-mode gain of 0.2 and a common-mode rejection ratio of 3250. What would the output voltage be if the single-ended input voltage was 7 mV rms?
A. 1.4 mV rms
B. 650 mV rms
C. 4.55 V rms
D. 0.455 V rms
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