MCQOPTIONS
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MCQOPTIONS
This section includes 9 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 in ___________ |
| 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 the 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. |
If C1 and C2 are the capacitance used in Colpitts oscillator the effective capacitance in the equation of frequency calculation is equal to ___________ |
| A. | ( C1 C2)/(C1+C2) |
| B. | 3 (C1 C2)/(C1+C2) |
| C. | (C1 C2)/(2 (C1+C2)) |
| D. | (C1 C2)/(C1+C2) |
| Answer» E. | |
| 7. |
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 | |
| 8. |
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 | |
| 9. |
The frequency of Colpitts oscillator is expressed as __________
|
| A. | 1/(4 LC) |
| B. | 1/(2 LC) |
| C. | 1/(3 LC) |
| D. | 3/(2 LC) |
| Answer» C. 1/(3 LC) | |