MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The feedback component in an is a capacitor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
When the capacitance in an increases, the critical frequency decreases. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
For a to produce a sustained sine-wave output, the phase shift around the positive feedback loop must be greater than 0°. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
A two-pole active filter produces a roll-off rate of . |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
A is a type of comparator circuit. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Above the critical frequency () of a low-pass filter, the output voltage gain _______. |
| A. | does not change |
| B. | doubles for every 1 kHz increase in frequency |
| C. | increases |
| D. | decreases |
| Answer» E. | |
| 7. |
In order to sustain oscillations in a feedback oscillator, the gain should be _________ so the _______. |
| A. | reduced, equals one |
| B. | reduced, is less than one |
| C. | increased, is more than one |
| D. | increased, is much greater than one |
| Answer» B. reduced, is less than one | |
| 8. |
When used as a , an op-amp is wired in a closed-loop configuration. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Initially, the closed-loop gain () of a Wien-bridge oscillator should be |
| A. | < 3 |
| B. | > 3 |
| C. | 0 |
| D. | |
| E. | 1 |
| Answer» C. 0 | |
| 10. |
The formula shows that for a given capacitor, if the voltage changes at a constant rate with respect to time, the current will |
| A. | increase |
| B. | decrease |
| C. | be constant |
| D. | decrease logarithmically |
| Answer» D. decrease logarithmically | |
| 11. |
If the value of resistor in an averaging amplifier circuit is equal to the value of one input resistor divided by the number of inputs, the output will be equal to |
| A. | the average of the individual inputs |
| B. | the inverted sum of the individual inputs |
| C. | the sum of the individual inputs |
| D. | the inverted average of the individual inputs |
| Answer» E. | |