MCQOPTIONS
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MCQOPTIONS
This section includes 55 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics & Communication Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
In the Wien bridge oscillator, the 0° phase-shift is met by using lead-lag network and by using |
| A. | inverting op-amp |
| B. | non-inverting op-amp |
| C. | feedback op-amp |
| D. | high-gain op-amp |
| Answer» C. feedback op-amp | |
| 52. |
A Series-Series feedback amplifier is |
| A. | Voltage amplifier |
| B. | Current amplifier |
| C. | Transresistance |
| D. | Transconductance |
| Answer» E. | |
| 53. |
A triangular wave generator can be formed by connecting(1) an integrator to the square wave generator(2) a differentiator to the square wave generator(3) a differentiator to quadrature oscillator(4) an integrator to quadrature oscillator |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 54. |
An amplifier, without feedback, has a gain of A. The distortion at full output is 10%. The distortion is reduced to 2% with negative feedback (feedback factor β = 0.03). The values of A and A’ (i.e. the gain with feedback) are, respectively, nearly |
| A. | 133.3 and 18.5 |
| B. | 133.3 and 26.7 |
| C. | 201.3 and 26.7 |
| D. | 201.3 and 18.5 |
| Answer» C. 201.3 and 26.7 | |
| 55. |
One of the following microwave diodes is suitable for very low power oscillator |
| A. | Tunnel |
| B. | Gunn |
| C. | IMPATT |
| D. | LSA |
| Answer» B. Gunn | |