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Q. |
A transistor has hie =2kΩ, hoe=25µmhos and hfe=60 with an unbypassed emitter resistor Re=1kΩ. What will be the input resistance and output resistance? |
A. | 90kΩ and 50kΩ respectively |
B. | 33kΩ and 45kΩ respectively |
C. | 6kΩ and 40kΩ respectively |
D. | 63kΩ and 40kΩ respectively |
Answer» D. 63kΩ and 40kΩ respectively | |
Explanation: as the emitter is unbypassed, the input resistance ri=hie+(1+hfe)re |
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