Bipolar-Junction Transistors (BJT) Questions and Answers
Bipolar-Junction Transistors (BJT) are essential components in analog and digital circuits. These transistors act as amplifiers or switches and are crucial in designing electronic systems. Many aptitude questions and answers in exams like GATE, ISRO, and DRDO focus on BJT characteristics, configurations, and biasing. This section provides BJT questions with answers and step-by-step solutions to help you understand transistor operation in common-base, common-emitter, and common-collector setups. Practicing these problems through aptitude test practice online strengthens your theoretical knowledge and helps in solving circuit-based questions efficiently during competitive exams.
Learn about BJT operation and characteristics. See also transistor bias circuits and electronic devices
Bipolar-Junction Transistors (BJT)
21. The input/output relationship of the common-collector and common-base amplifiers is:
- 270 degrees
- 180 degrees
- 90 degrees
- 0 degrees
22. If a transistor operates at the middle of the dc load line, a decrease in the current gain will move the Q point:
- off the load line
- nowhere
- up
- down
23. Which is the higher gain provided by a C-E configuration?
- voltage
- current
- resistance
- power