MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In a PNP transistor operating in active region, the main stream of current is_________ |
| A. | drift of holes |
| B. | drift of electrons |
| C. | diffusion of holes |
| D. | diffusion of electrons |
| Answer» D. diffusion of electrons | |
| 2. |
In a PNP germanium transistor, the cut in voltage is about_________ |
| A. | -0.1V |
| B. | -0.01V |
| C. | -0.05V |
| D. | -0.07V |
| Answer» B. -0.01V | |
| 3. |
A germanium transistor used as an amplifier has a collector cut off current ICBO=10 A at a temperature 27 C and =50. What is the collector current when the base current is 0.25mA? |
| A. | 10.76mA |
| B. | 13.01mA |
| C. | 15.67mA |
| D. | 11.88Ma |
| Answer» C. 15.67mA | |
| 4. |
A transistor has an IC of 100mA and IB of 0.5mA. What is the value of dc? |
| A. | 0.565 |
| B. | 0.754 |
| C. | 1.24 |
| D. | 0.995 |
| Answer» E. | |
| 5. |
A common base transistor amplifier has an input resistance of 20 and output resistance of 100k . If a signal of 400mV is applied between emitter and base, find the voltage amplification. Assume ac to be one. |
| A. | 20 |
| B. | 50 |
| C. | 30 |
| D. | 25 |
| Answer» C. 30 | |
| 6. |
The emitter current consist of_________ |
| A. | electrons passing from collector to emitter |
| B. | holes crossing from base to collector |
| C. | electron current Ine constituted by electrons |
| D. | immobile charge carriers |
| Answer» D. immobile charge carriers | |