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Electronic Principles - Section 4 Multiple Questions and Answers.
| 27. | If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage? | ||
| A. | 0 V | ||
| B. | 36 V | ||
| C. | 40 V | ||
| D. | 60 V | ||
| 28. | A device that converts light energy to electrical energy is called a: | ||
| A. | thermocouple | ||
| B. | solar cell | ||
| C. | photodiode | ||
| D. | photo transistor | ||
| 29. | How much current flows through a 60-W light bulb that is operating at 120 V? | ||
| A. | 0.5A | ||
| B. | 180 A | ||
| C. | 2:00 AM | ||
| D. | 7200 A | ||
| 30. | What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it? | ||
| A. | 3 W | ||
| B. | 6 W | ||
| C. | 64 W | ||
| D. | 122 W | ||
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