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. |
If the output power of an amplifier is 10 V, and the input power supplied to the amplifier is 0.229 V given that the DC voltage used is 38.5 V, efficiency of the power amplifier is: |
| A. | 25% |
| B. | 50% |
| C. | 75% |
| D. | 35% |
| Answer» B. 50% | |
| 2. |
_______________ are used in the final stages of radar and radio transmitters to increase the radiated power level. |
| A. | Power amplifiers |
| B. | Oscillators |
| C. | Transistors |
| D. | Attenuators |
| Answer» B. Oscillators | |