MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For an ideal operational amplifier (except for the fact that it has finite gain) one set of the value for the input voltages (v2 is the positive terminal v1 is the negative terminal) and output voltage (v0) as determined experimentally is v1= 2.01V, v2=2.00V and v0= -0.99V. Experiment was carried with different values of input and output voltages. Which of the following is not possible considering experimental error? |
| A. | v1= 1.99V, v2= 2.00V, v0 = 1.00V |
| B. | v1= 1.00V, v2= 1.00V, v0 = 0V |
| C. | v1= 1.00V, v2= 1.10V, v0 = 10.1V |
| D. | v1= 0.99V, v2= 2.00V, v0 = 1.00V |
| Answer» E. | |
| 2. |
Express the input voltages v1 and v2 in terms of differential input (vd) and common-mode input(vc). Given v2 > v2. |
| A. | Vd = V1 – V2, Vc = 0.5(V1 + V2) |
| B. | Vd = V2 – V1, Vc = V1 + V2 |
| C. | Vd = V1 – V2, Vc = V1 + V2 |
| D. | Vd = V2 – V1, Vc = 0.5(V1 + V2) |
| Answer» E. | |
| 3. |
Consider the figure given below. Known that vo = 4V and vi = 2V, determine the gain for the op amp assuming that it is ideal except for the fact that it has finite gain |
| A. | 1001 |
| B. | 2002 |
| C. | 3003 |
| D. | 4004 |
| Answer» C. 3003 | |
| 4. |
In an ideal op amp the open-loop gain is 103. The op amp is used in a feedback circuit, and the voltages appearing at two of its three signal terminals are measured as v2 = 0V and v3 = 2V where it is assumed that v1 and v2 are input terminals and v3 is the output terminal. The value of the differential (vd) and common-mode (vcm)signal is |
| A. | Vd = 2 mV and vcm = 1 mv |
| B. | Vd = 2 mV and vcm = -1 mV |
| C. | Vd = 2 mV and vcm = 2mV |
| D. | Vd = 2 mV and vcm = -2mV |
| Answer» C. Vd = 2 mV and vcm = 2mV | |