Electronics - Bipolar Junction Transistors (BJT)
Exercise :: Bipolar Junction Transistors (BJT) - Filling the Blanks
| 1. |
The input resistance of the base of an emitter-follower is usually _________. |
| A. |
very low | | B. |
very high | | C. |
shorted to ground | | D. |
open |
Answer: Option B
Explanation:
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| 2. |
The phase difference between the input and output ac voltage signals of a common-emitter amplifier is __________. |
Answer: Option C
Explanation:
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| 3. |
Base bias provides _________. |
| A. |
a very stable Q point | | B. |
a very unstable Q point | | C. |
no current gain | | D. |
zero current in the base and collector circuits |
Answer: Option B
Explanation:
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| 4. |
VCE approximately equals ________ when a transistor switch is cut off. |
Answer: Option A
Explanation:
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| 5. |
The input resistance, Rin of a common-collector amplifier, consists of ____________. |
| A. |
Rin = RE × AC Current Gain | | B. |
 | | C. |
Rin = RE ×  | | D. |
none of the above |
Answer: Option A
Explanation:
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