MCQOPTIONS
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MCQOPTIONS
This section includes 5 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. |
In a Wien bridge oscillator, it is found that at the frequency O there is no phase shift in RF/R gain loop and the phase shift of the amplifier is also zero. Then what is the equation for the radian frequency, given R1, C1 is the series network of bridge and R2, C2 is the parallel network? |
| A. | <sub>O</sub>=1/R<sub>1</sub>C<sub>1</sub> |
| B. | <sub>O</sub>=1/R<sub>2</sub>C<sub>2</sub> |
| C. | <sub>O</sub>=1/R<sub>1</sub>R<sub>2</sub>C<sub>1</sub>C<sub>2</sub> |
| D. | <sub>O</sub>=1/RFC<sub>1</sub>RC<sub>2</sub> |
| Answer» D. <sub>O</sub>=1/RFC<sub>1</sub>RC<sub>2</sub> | |
| 2. |
For any Wien Bridge oscillator, R1 = R2 and C1 = C2 always in the bridge, provided the phase shift through the amplifier is zero. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Which of these is a disadvantage of the Wien Bridge oscillator? |
| A. | It cannot fabricate a pure tune |
| B. | Distortion observed in output is high |
| C. | It cannot be used for high resistance values |
| D. | There is no automatic gain control |
| Answer» D. There is no automatic gain control | |
| 4. |
At the resonant frequency, what is the phase shift for the output in a Wien Bridge oscillator? |
| A. | 0 |
| B. | 45 |
| C. | 90 |
| D. | 180 |
| Answer» B. 45 | |
| 5. |
Which of these is incorrect for a Wien Bridge oscillator? |
| A. | Low distortion |
| B. | Good stability at the resonant frequency |
| C. | Difficult to tune |
| D. | Based on frequency selective form of a Wheatstone bridge |
| Answer» D. Based on frequency selective form of a Wheatstone bridge | |