MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When the β value is large for a given transistor, the IC and VCE values are given by_________ |
| A. | (VCC-VBE)/RB, VCC-RCIC |
| B. | (VCC+VBE)/RB, VCC-RC(IC+IB) |
| C. | (VCC+VBE)/RB, VCC+RC(IC+IB) |
| D. | (VCC+VBE)/RB, VCC+RC(IC-IB) |
| Answer» B. (VCC+VBE)/RB, VCC-RC(IC+IB) | |
| 2. |
In the circuit shown below, β =100 and VBE=0.7V. The Zener diode has a breakdown voltage of 6V. Find the operating point.a) (6.7V, 5.3mA)b) (5.7V, 5.3mA)c) (6.7V, 5mA)d) (6V, 5m |
| A. | (6.7V, 5.3mA) |
| B. | (5.7V, 5.3mA) |
| C. | (6.7V, 5mA) |
| D. | (6V, 5mA) |
| Answer» B. (5.7V, 5.3mA) | |
| 3. |
In the circuit, transistor has β =60, VBE=0.7V. Find the collector to emitter voltage drop VCE. |
| A. | 5V |
| B. | 3V |
| C. | 8V |
| D. | 6V |
| Answer» E. | |
| 4. |
The collector current (IC) that is obtained in a collector to base biased transistor is_________ |
| A. | (VCC-VBE)/RB |
| B. | (VCC+VBE)/RB |
| C. | (VCE-VBE)/RB |
| D. | (VCE+VBE)/RB |
| Answer» B. (VCC+VBE)/RB | |
| 5. |
When the β value is large for a given transistor, the IC and VCE values are given by_________$# |
| A. | (V<sub>CC</sub>-V<sub>BE</sub>)/R<sub>B</sub>, V<sub>CC</sub>-RCI<sub>C</sub> |
| B. | (V<sub>CC</sub>+V<sub>BE</sub>)/R<sub>B</sub>, V<sub>CC</sub>-RC(I<sub>C</sub>+I<sub>B</sub>) |
| C. | (V<sub>CC</sub>+V<sub>BE</sub>)/R<sub>B</sub>, V<sub>CC</sub>+RC(I<sub>C</sub>+I<sub>B</sub>) |
| D. | (V<sub>CC</sub>+V<sub>BE</sub>)/R<sub>B</sub>, V<sub>CC</sub>+RC(I<sub>C</sub>-I<sub>B</sub>) |
| Answer» B. (V<sub>CC</sub>+V<sub>BE</sub>)/R<sub>B</sub>, V<sub>CC</sub>-RC(I<sub>C</sub>+I<sub>B</sub>) | |
| 6. |
The negative feedback does good for DC signal by_________ |
| A. | decreasing the gain |
| B. | increasing the gain |
| C. | stabilising the operating point |
| D. | increasing the stability factor |
| Answer» D. increasing the stability factor | |
| 7. |
The demerit of a collector to base bias is_________ |
| A. | its need of high resistance values |
| B. | its dependence on β |
| C. | its independence on β |
| D. | the positive feedback produced by the base resistor |
| Answer» B. its dependence on ‚âà√≠‚Äö√¢¬ß | |
| 8. |
What is the DC characteristic used to prove that the transistor is indeed biased in saturation mode? |
| A. | I<sub>C</sub> = βI<sub>B</sub> |
| B. | I<sub>C</sub> > βI<sub>B</sub> |
| C. | I<sub>C</sub> >> βI<sub>B</sub> |
| D. | I<sub>C</sub> < βI<sub>B</sub> |
| Answer» E. | |
| 9. |
The collector current (IC) that is obtained in a collector to base biased transistor is_________ |
| A. | (V<sub>CC</sub>-V<sub>BE</sub>)/R<sub>B</sub> |
| B. | (V<sub>CC</sub>+V<sub>BE</sub>)/R<sub>B</sub> |
| C. | (V<sub>CE</sub>-V<sub>BE</sub>)/R<sub>B</sub> |
| D. | (V<sub>CE</sub>+V<sub>BE</sub>)/R<sub>B</sub> |
| Answer» B. (V<sub>CC</sub>+V<sub>BE</sub>)/R<sub>B</sub> | |