Discussion
Why are the common-emitter output characteristics not quite horizontal?
Answer: B
The Early effect narrows the effective base as collector voltage rises, so beta creeps up and the characteristic slopes gently. Base current is held constant along each curve by definition, leakage is a temperature matter, and the fall in beta at high current bends the curves at the top rather than tilting them. That small slope is the whole of a transistor's output resistance, and it sets the maximum gain a single stage can reach. The shared properties explain why these schemes form a family, and the differences explain why more than one exists.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development