MCQOPTIONS
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MCQOPTIONS
This section includes 16 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 input resistance is given by _________ |
| A. | ∆VCE/∆IB |
| B. | ∆VBE/∆IB |
| C. | ∆VBE/∆IC |
| D. | ∆VBE/∆IE |
| Answer» C. ∆VBE/∆IC | |
| 2. |
When is the transistor said to be saturated? |
| A. | when VCE is very low |
| B. | when VCE is very high |
| C. | when VBE is very low |
| D. | when VBE is very high |
| Answer» B. when VCE is very high | |
| 3. |
The point on the DC load line which is represented by ‘Q’ is called _________ |
| A. | cut off point |
| B. | cut in point |
| C. | breakdown point |
| D. | operating point |
| Answer» E. | |
| 4. |
A change in 300mV in base emitter voltage causes a change of 100µA in the base current. Determine the dynamic input resistance. |
| A. | 20kΩ |
| B. | 10kΩ |
| C. | 30kΩ |
| D. | 60kΩ |
| Answer» D. 60kΩ | |
| 5. |
The relation between α and β is given by _________ |
| A. | 1/(1-α)=1- β |
| B. | 1/(1+α)=1+ β |
| C. | 1/(1-α)=1+ β |
| D. | 1/(1+α)=1- β |
| Answer» D. 1/(1+α)=1- β | |
| 6. |
The current amplification factor ϒdc is given by_________ |
| A. | IE/IB |
| B. | IB/IE |
| C. | IC/IE |
| D. | IE/IC |
| Answer» B. IB/IE | |
| 7. |
WHEN_IS_THE_TRANSISTOR_SAID_TO_BE_SATURATED??$ |
| A. | when V<sub>CE</sub> is very low |
| B. | when V<sub>CE</sub> is very high |
| C. | when V<sub>BE</sub> is very low |
| D. | when V<sub>BE</sub> is very high |
| Answer» B. when V<sub>CE</sub> is very high | |
| 8. |
The_input_resistance_is_given_by__________$ |
| A. | ∆V<sub>CE</sub>/∆I<sub>B</sub> |
| B. | ∆V<sub>BE</sub>/∆I<sub>B</sub> |
| C. | ∆V<sub>BE</sub>/∆I<sub>C</sub> |
| D. | ∆V<sub>BE</sub>/∆I<sub>E</sub> |
| Answer» C. ‚Äö√Ñ√∂‚àö‚Ć‚àö√∫V<sub>BE</sub>/‚Äö√Ñ√∂‚àö‚Ć‚àö√∫I<sub>C</sub> | |
| 9. |
The point on the DC load line which is represented by ‘Q’ is called ________?# |
| A. | cut off point |
| B. | cut in point |
| C. | breakdown point |
| D. | operating point |
| Answer» E. | |
| 10. |
A change in 300mV in base emitter voltage causes a change of 100µA in the base current. Determine the dynamic input resistance.$ |
| A. | 20kΩ |
| B. | 10kΩ |
| C. | 30kΩ |
| D. | 60kΩ |
| Answer» D. 60k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ | |
| 11. |
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 | |
| 12. |
What is the output resistance of CC transistor? |
| A. | 25 Ω |
| B. | 50 Ω |
| C. | 100 Ω |
| D. | 150 Ω |
| Answer» B. 50 ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ | |
| 13. |
The application of a CC configured transistor is_________ |
| A. | voltage multiplier |
| B. | level shifter |
| C. | rectification |
| D. | impedance matching |
| Answer» E. | |
| 14. |
The CC configuration has an input resistance_________ |
| A. | 500kΩ |
| B. | 750kΩ |
| C. | 600kΩ |
| D. | 400kΩ |
| Answer» C. 600k‚Äö√Ñ√∂‚àö√´¬¨‚àÇ | |
| 15. |
The relation between α and β is given by _________$ |
| A. | 1/(1-α)=1- β |
| B. | 1/(1+α)=1+ β |
| C. | 1/(1-α)=1+ β |
| D. | 1/(1+α)=1- β |
| Answer» D. 1/(1+‚âà√≠¬¨¬±)=1- ‚âà√≠‚Äö√¢¬ß | |
| 16. |
The current amplification factor ϒdc is given by_________ |
| A. | I<sub>E</sub>/I<sub>B</sub> |
| B. | I<sub>B</sub>/I<sub>E</sub> |
| C. | I<sub>C</sub>/I<sub>E</sub> |
| D. | I<sub>E</sub>/I<sub>C</sub> |
| Answer» B. I<sub>B</sub>/I<sub>E</sub> | |