MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
WHICH_AMONG_THE_FOLLOWING_HAS_BETTER_CAPTURE_TRACKING_&_LOCKING_CHARACTERISTICS??$ |
| A. | XOR phase detector |
| B. | Edge triggered phase detector |
| C. | Analog phase detector |
| D. | All of the mentioned |
| Answer» C. Analog phase detector | |
| 2. |
The maximum dc output voltage in digital phase detector occurs |
| A. | When the phase difference is π/2 |
| B. | When the phase difference is π |
| C. | When the phase difference is 3π/4 |
| D. | When the phase difference is 2π |
| Answer» C. When the phase difference is 3‚âà√¨‚àö√ë/4 | |
| 3. |
When does a digital phase detector can be used, where fo->output frequency, fs->input frequency. |
| A. | Both f<sub>o</sub> & f<sub>s</sub> signals should be square wave |
| B. | f<sub>o</sub> should be square wave & f<sub>s</sub> can be any non-sinusoidal wave |
| C. | f<sub>s</sub> should be square wave & f<sub>o</sub> can be any non-sinusoidal wave |
| D. | Both f<sub>o</sub> & f<sub>s</sub> can be any non-sinusoidal wave |
| Answer» B. f<sub>o</sub> should be square wave & f<sub>s</sub> can be any non-sinusoidal wave | |
| 4. |
If the average error voltage & the phase shift are given as 6.2v & π/4.Determine the phase angle to voltage transfer coefficient of full wave switching phase detector.$ |
| A. | -0.19 |
| B. | -0.09 |
| C. | -0.03 |
| D. | -0.13 |
| Answer» E. | |
| 5. |
How to overcome the problem associated with switch type phase detective? |
| A. | Increase loop gain depending on input signal |
| B. | Phase shift is made linear |
| C. | Limit the amplifier of input signal |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 6. |
Find the error voltage of phase comparator whose input signal is Vs= Vssin(2πfst) and the output signal Vo= Vosin(2πfot+φ).$ |
| A. | V<sub>e</sub>=[k×(V<sub>s</sub>/2)]×[cos(-φ)-cos(2πf<sub>o</sub>t+φ)]. |
| B. | V<sub>e</sub>=[k×V<sub>s</sub>×(V<sub>o</sub>/2)]×[cos(-φ)-cos(2πf<sub>o</sub>t+φ)]. |
| C. | V<sub>e</sub>=[k×V<sub>s</sub>×(V<sub>o</sub>/2)]×[cos(-φ)+cos(2πf<sub>o</sub>t+φ)]. |
| D. | V<sub>e</sub>=[k×V<sub>s</sub>×V<sub>o</sub>]×[cos(-φ)-cos(2πf<sub>o</sub>t+φ)]. |
| Answer» C. V<sub>e</sub>=[k‚Äö√†√∂‚àö‚â•V<sub>s</sub>‚Äö√†√∂‚àö‚â•(V<sub>o</sub>/2)]‚Äö√†√∂‚àö‚â•[cos(-‚âà√¨‚àö√∫)+cos(2‚âà√¨‚àö√ëf<sub>o</sub>t+‚âà√¨‚àö√∫)]. | |
| 7. |
What happens when VCO output is 90o out of phase with respect to input signal? |
| A. | Perfect lock |
| B. | Attenuation |
| C. | Shift in phase of comparator |
| D. | Error signal is removed |
| Answer» B. Attenuation | |
| 8. |
Analog phase detector is often referred as |
| A. | Full wave detector |
| B. | Half wave detector |
| C. | Rectifier wave detector |
| D. | None of the mentioned |
| Answer» C. Rectifier wave detector | |