op amp circuits MCQs – Page 2

Practise focused op amp circuits questions with marked answers for exam preparation and subject revision.

op amp circuits Mcqs
21. How many op-amps are required to implement this equationop-amps?
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A. 2

B. 1

C. 3

D. 4

22. For an ideal op-amp, which of the following is true?
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A. The current into the input terminals is zero

B. The output resistance is zero

C. The differential voltage across the input terminals is zero

D. The current from output terminal is zero
23. A non inverting closed loop op amp circuit generally has a gain factor______________?
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A. Greater than one

B. Less than one

C. Equal to one

D. Of zero

24. The ideal OP-AMP has the following characteristics
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A. Ri=? ,A=? ,R0=?

B. Ri=? ,A=? ,R0=0

C. Ri=0 ,A=? ,R0=0

D. Ri=0 ,A=? ,R0=?

25. In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is________________?
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A. 46dB

B. 25dB

C. 23dB

D. 50dB

26. A 741-Type OP-AMP has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of______________?
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A. 50KHz

B. 1000/17KHz

C. 1000/7.07KHz

D. 100KHz

27. An ideal OP-AMP is an ideal__________?
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A. Current controlled Current source

B. Voltage controlled Voltage source

C. Voltage controlled Current source

D. Current controlled Voltage source