MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Linear Integrated Circuit knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
THE_VALUE_OF_FEEDBACK_RESISTOR_IN_PHASE_SHIFT_OSCILLATOR_IS_180K‚ÂÀ√≠¬¨¬©._FIND_ITS_INPUT_RESISTANCE??$# |
| A. | 52kΩ |
| B. | 151kΩ |
| C. | 209kΩ |
| D. | 6.2kΩ |
| Answer» D. 6.2k‚âà√≠¬¨¬© | |
| 2. |
The condition for zero phase shift in wein bridge oscillator is achieved by$ |
| A. | Connecting feedback to non-inverting input terminal of op-amp |
| B. | Balancing the bridge |
| C. | Applying parallel combination of RC to the feedback network |
| D. | All of the mentioned |
| Answer» C. Applying parallel combination of RC to the feedback network | |
| 3. |
Determine the frequency of oscillation (fo) in phase shift oscillator?$ |
| A. | f<sub>o</sub> = √6/ωRC |
| B. | f<sub>o</sub> = 0.56/ωRC |
| C. | f<sub>o</sub> = 0.065/ωRC |
| D. | f<sub>o</sub> = 6/ωRC |
| Answer» D. f<sub>o</sub> = 6/‚âà√¨‚àö¬¢RC | |
| 4. |
A phase shift oscillator is designed to oscillate at 155Hz. Determine the value of Rf. (Take C=0.30µF?# |
| A. | 399Ω |
| B. | 3.98MΩ |
| C. | 13.9kΩ |
| D. | 403kΩ |
| Answer» E. | |
| 5. |
Find out the constant values of α and ß in phase shift oscillator.$ |
| A. | α = √6, ß = -1/29 |
| B. | α = 6, ß = -1/29 |
| C. | α = √6, ß = 1/29 |
| D. | α = 6, ß = -1/29 |
| Answer» B. ‚âà√≠¬¨¬± = 6, ‚Äö√†√∂‚àö¬∫ = -1/29 | |
| 6. |
Which type of op-amp is avoided for high frequencies? |
| A. | LM318 |
| B. | Op-amp 741 |
| C. | LF 351 |
| D. | None of the mentioned |
| Answer» C. LF 351 | |
| 7. |
What must be done to ensure that oscillation will not die out in RC phase shift oscillator? |
| A. | Gain of amplifier is kept greater than 29 |
| B. | Gain of amplifier is kept greater than 1 |
| C. | Gain of amplifier is kept less than 29 |
| D. | Gain of amplifier is kept less than 1 |
| Answer» B. Gain of amplifier is kept greater than 1 | |
| 8. |
Calculate the frequency of oscillation for RC phase shift oscillator having the value of R and C as 35Ω and 3.7µF respectively.$ |
| A. | 1230 Hz |
| B. | 204 Hz |
| C. | 502Hz |
| D. | 673 Hz |
| Answer» D. 673 Hz | |
| 9. |
How many RC stages are used in the RC phase shift oscillator? |
| A. | Six |
| B. | Two |
| C. | Four |
| D. | Three |
| Answer» E. | |
| 10. |
What will be the phase shift of feedback circuit in RC phase shift oscillator? |
| A. | 360<sup>o</sup> phase shift |
| B. | 180<sup>o</sup> phase shift |
| C. | 90<sup>o</sup> phase shift |
| D. | 60<sup>o</sup> phase shift |
| Answer» C. 90<sup>o</sup> phase shift | |