MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
COLPITTS_OSCILLATOR_PROVIDES_MORE_PERFORMANCE_THAN_HARTLEY_OSCILLATOR_BECAUSE_OF_ITS__________ELEMENTS?$ |
| A. | Capacitive |
| B. | Resistive |
| C. | Inductive |
| D. | Active |
| Answer» B. Resistive | |
| 2. |
The improvement of Colpitts oscillator over Hately oscillator is, Colpitts oscillator’s performance i?# |
| A. | All frequency region |
| B. | Mid frequency region |
| C. | High frequency region |
| D. | Low frequency region |
| Answer» D. Low frequency region | |
| 3. |
Which of the following equation gives amplitude of oscillation in Colpitts oscillator using describing function method? (Where Ic is the is the bias current RL is the load resistor and C1 & C2 are the upper and lower capacitance of voltage divider bias) |
| A. | 2I<sub>C</sub>R<sub>L</sub>/C1+C2 |
| B. | 2I<sub>C</sub>C2/C1+C2 |
| C. | 2I<sub>C</sub>R<sub>L</sub> C2/C1 |
| D. | 2I<sub>C</sub>R<sub>L</sub> C2/C1+C2 |
| Answer» E. | |
| 4. |
The gain device in the colpitts oscillator act as a |
| A. | Low pass filter |
| B. | High pass filter |
| C. | Band pass filter |
| D. | Band rejection filter |
| Answer» D. Band rejection filter | |
| 5. |
Phase shift provided by overall tank circuit is |
| A. | 0 degree |
| B. | 90 degree |
| C. | 180 degree |
| D. | -90 degree |
| Answer» D. -90 degree | |
| 6. |
Which configuration of transistor amplifier is used for Colpitts oscillator? |
| A. | Common emitter amplifier |
| B. | Common collector amplifier |
| C. | Common base amplifier |
| D. | Combination of both common emitter and common collector |
| Answer» B. Common collector amplifier | |
| 7. |
If C1 and C2 are the capacitance used in Colpitts oscillator the effective capacitance in the equation of frequency calculation is equal to |
| A. | (·¥®√óC1√óC2)/(C1+C2) |
| B. | 3 (C1√óC2)/(C1+C2) |
| C. | (C1√óC2)/(2·¥®(C1+C2)) |
| D. | (C1√óC2)/(C1+C2) |
| Answer» E. | |
| 8. |
To ensure constant feedback which method is used in Colpitts oscillator |
| A. | Gang tuning |
| B. | Using same capacitor |
| C. | No method is used |
| D. | Voltage divider always gives constant feedback |
| Answer» B. Using same capacitor | |
| 9. |
Colpitts oscillator uses which type of feedback |
| A. | Negative feedback |
| B. | Positive feedback |
| C. | No feedback |
| D. | Positive or Negative depends upon frequency |
| Answer» C. No feedback | |
| 10. |
The frequency of Colpitts oscillator is expressed as |
| A. | |
| B. | 1/(4ᴨ√LC) |
| C. | 1/(2ᴨ√LC) |
| D. | 1/(3ᴨ√LC) |
| Answer» C. 1/(2¬¨‚à묨‚Ä¢¬¨√Ü‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇLC) | |