Electronic Devices - BJT Amplifiers
Exercise :: BJT Amplifiers - General Questions
| 21. |
Refer to this figure. Calculate the value of Rin(tot).
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Answer: Option B
Explanation:
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| 22. |
What is the range of the current gain for BJT transistor amplifiers? |
| A. |
less than 1 | | B. |
1 to 100 | | C. |
above 100 | | D. |
All of the above |
Answer: Option D
Explanation:
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| 23. |
What does the negative sign in the voltage gain of the common-emitter fixed-bias configuration indicate? |
| A. |
The output and input voltages are 180º out of phase. | | B. |
Gain is smaller than 1. | | C. |
Gain is larger than 1. | | D. |
None of the above |
Answer: Option A
Explanation:
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| 24. |
For the common-emitter fixed-bias configuration, there is a ________ phase shift between the input and output signals. |
Answer: Option D
Explanation:
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| 25. |
Which one of the following configurations has the lowest input impedance? |
| A. |
Fixed-bias | | B. |
Common-base | | C. |
Emitter-follower | | D. |
Voltage-divider? |
Answer: Option B
Explanation:
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