MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
You need a very thyristor to control the speed of an AC fan motor. A good device to use would be |
| A. | a 4-layer diode. |
| B. | a PUT. |
| C. | a triac. |
| D. | a BJT. |
| Answer» D. a BJT. | |
| 2. |
You have a light-dimmer circuit using an SCR. In testing the circuit, you find that I = 0 mA and the light is still on. You conclude that the trouble might be one of the following: |
| A. | the SCR is open. |
| B. | the switch is faulty. |
| C. | the gate circuit is shorted. |
| D. | this is normal; nothing is wrong. |
| Answer» E. | |
| 3. |
Your boss has asked you to recommend a thyristor that will enable you to and also . Which of the following should you recommend? |
| A. | an SCR |
| B. | an SCS |
| C. | a PUT |
| D. | a triac |
| Answer» C. a PUT | |