MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
The negative sign in the formula of amplification factor indicates_________ |
| A. | that IE flows into transistor while IC flows out it |
| B. | that IC flows into transistor while IE flows out it |
| C. | that IB flows into transistor while IC flows out it |
| D. | that IC flows into transistor while IB flows out it |
| Answer» B. that IC flows into transistor while IE flows out it | |
| 2. |
The expression for IC in the compensation for instability due to ICO variation_________ |
| A. | βI+βIO+βICO |
| B. | βI+βIO |
| C. | βIO+βICO |
| D. | βI+βICO |
| Answer» B. βI+βIO | |
| 3. |
THE_OUTPUT_RESISTANCE_OF_CB_TRANSISTOR_IS_GIVEN_BY__________?$ |
| A. | ∆V<sub>CB</sub>/∆I<sub>C</sub> |
| B. | ∆V<sub>BE</sub>/∆I<sub>B</sub> |
| C. | ∆V<sub>BE</sub>/∆I<sub>C</sub> |
| D. | ∆V<sub>EB</sub>/∆I<sub>E</sub> |
| Answer» B. ‚Äö√Ñ√∂‚àö‚Ć‚àö√∫V<sub>BE</sub>/‚Äö√Ñ√∂‚àö‚Ć‚àö√∫I<sub>B</sub> | |
| 4. |
The_negative_sign_in_the_formula_of_amplification_factor_indicates_________$ |
| A. | that I<sub>E</sub> flows into transistor while I<sub>C</sub> flows out it |
| B. | that I<sub>C</sub> flows into transistor while I<sub>E</sub> flows out it |
| C. | that I<sub>B</sub> flows into transistor while I<sub>C</sub> flows out it |
| D. | that I<sub>C</sub> flows into transistor while I<sub>B</sub> flows out it |
| Answer» B. that I<sub>C</sub> flows into transistor while I<sub>E</sub> flows out it | |
| 5. |
Increase in collector emitter voltage from 5V to 8V causes increase in collector current from 5mA to 5.3mA. Determine the dynamic output resistance? |
| A. | 20kΩ |
| B. | 10kΩ |
| C. | 50kΩ |
| D. | 60kΩ |
| Answer» C. 50k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ | |
| 6. |
The expression for IC in the compensation for instability due to ICO variation_________ |
| A. | βI+βI<sub>O</sub>+βI<sub>CO</sub> |
| B. | βI+βI<sub>O</sub> |
| C. | βI<sub>O</sub>+βI<sub>CO</sub> |
| D. | βI+βI<sub>CO</sub> |
| Answer» B. ‚âà√≠‚Äö√¢¬ßI+‚âà√≠‚Äö√¢¬ßI<sub>O</sub> | |
| 7. |
What is the compensation element used for variation in VBE and ICO? |
| A. | diodes |
| B. | capacitors |
| C. | resistors |
| D. | transformers |
| Answer» B. capacitors | |
| 8. |
In a silicon transistor, which of the following change significantly to the change in IC? |
| A. | V<sub>CE</sub> |
| B. | I<sub>B</sub> |
| C. | V<sub>BE</sub> |
| D. | I<sub>E</sub> |
| Answer» D. I<sub>E</sub> | |
| 9. |
Compensation techniques refer to the use of_________ |
| A. | diodes |
| B. | capacitors |
| C. | resistors |
| D. | transformers |
| Answer» B. capacitors | |
| 10. |
The compensation techniques are used to_________ |
| A. | increase stability |
| B. | increase the voltage gain |
| C. | improve negative feedback |
| D. | decrease voltage gain |
| Answer» C. improve negative feedback | |