Electronic Devices and Circuit Theory- Bipolar Junction Transistors Questions and Answers
The Bipolar Junction Transistor (BJT) is a core topic in electronic devices and circuit theory, frequently seen in aptitude questions and answers with explanations for GATE, ESE, and DRDO exams. BJTs function as amplifiers and switches, and their behavior is determined by input–output current relations. Understanding concepts like current gain (β), biasing, and load line analysis is crucial for solving numerical and circuit-based aptitude problems. Practicing electronics aptitude questions with solutions PDF helps students strengthen fundamentals and excel in technical assessments.
Electronic Devices and Circuit Theory- Bipolar Junction Transistors
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19 questions
11. What is (are) general-purpose/small-signal transistors case type(s)?
- TO-18
- TO-92
- TO-39
- TO-52
12. What is (are) common fault(s) in a BJT-based circuit?
- opens or shorts internal to the transistor
- open bias resistor(s)
- external opens and shorts on the circuit board
- all of the above
13. The dc load line on a family of collector characteristic curves of a transistor shows the .
- saturation region
- cutoff region.
- active region.
- all of the above
17. In saturation, both the base-collector and base-emitter junctions are forward-biased.
- TRUE
- FALSE
18. Both junctions of a BJT should be forward-biased for linear operation.
- TRUE
- FALSE
19. Phototransistors usually respond only to light in the red or infrared spectrum.
- TRUE
- FALSE