MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these amplifiers is used for impedance matching? |
| A. | Common Base |
| B. | Common Emitter |
| C. | Common Collector |
| D. | Common Base & Emitter |
| Answer» D. Common Base & Emitter | |
| 2. |
The intermediate frequency of a superheterodyne receiver is 500KHz. What is the image frequency at 1200KHz? |
| A. | 600KHz |
| B. | 500KHz |
| C. | 700KHz |
| D. | 200KHz |
| Answer» D. 200KHz | |
| 3. |
Helical antenna is circularly polarized. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
If the distance between antenna and source doubles, the received signal power decreases by 1 4. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Power density from an isotropic antenna is equal to ________ |
| A. | ( frac{P_t}{4 pi R^2} ) |
| B. | ( frac{P_c}{4 pi R^2} ) |
| C. | ( frac{P_t}{2 pi R^2} ) |
| D. | ( frac{P_t}{4 pi R} ) |
| Answer» B. ( frac{P_c}{4 pi R^2} ) | |