Electronic Devices - Op-Amp Applications

Exercise :: Op-Amp Applications - General Questions

26. 

Calculate the output voltage if V1 = –3.3 V and V2 = 0.8 V.

A. 0 V
B. 6.6 V
C. –4 V
D. 2 V

Answer: Option B

Explanation:

Vo = -Rf(V1/R1 + V2/R2)


27. 

When a number of stages are connected in parallel, the overall gain is the product of the individual stage gains.

A. True
B. False

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

28. 

Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5 k and C1 = 0.05 F.

A. 1.273 kHz
B. 12.73 kHz
C. 127.3 kHz
D. 127.30 Hz

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

29. 

A filter that provides a constant output from dc up to a cutoff frequency and passes no signal above that frequency is called a ________ filter.

A. low-pass
B. high-pass
C. bandpass

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

30. 

Calculate the output voltage if V1 = 0 V and V2 = 0.2 V.

A. 0 V
B. –6.6 V
C. –4 V
D. 2 V

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.