NEET Physics is the scoring paper in the medical entrance examination. Here, you will discover the NEET Physics MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Physics objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Physics Junction Transistor Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.
MCQs on Junction Transistor
1. The emitter-base junction of a transistor is ………. Biased while the collector-base junction is ………….
(a) Reverse, Forward
(b) Reverse, Reverse
(c) Forward, forward
(d) Forward, reverse
Answer
Answer: (d) Forward, reverse
2. A NPN transistor conducts when
(a) Both collector and emitter are positive with respect to the base
(b) Collector is positive and the emitter is negative with respect to the base
(c) Collector is positive and the emitter is at the same potential as the base
(d) Both collector and emitter are negative with respect to the base
Answer
Answer: (b) Collector is positive and the emitter is negative with respect to the base
3. Which of the following is true
(a) Common base transistor is commonly used because the current gain is maximum
(b) Common emitter is commonly used because the current gain is maximum
(c) Common collector is commonly used because the current gain is maximum
(d) Common emitter is the least used transistor
Answer
Answer: (b) Common emitter is commonly used because the current gain is maximum
4. For a common base configuration of PNP transistor Ic/IE = 0.98 then the maximum current gain in common emitter configuration will be
(a) 12
(b) 24
(c) 6
(d) 5
Answer
Answer: (b) 24
5. In a PNP transistor working as a common-base amplifier, the current gain is 0.96 and emitter current is 7.2 mA. The base current is
(a) 0.4 mA
(b) 0.2 mA
(c) 0.29 mA
(d) 0.35 mA
Answer
Answer: (c) 0.29 mA
6. Which is the least doped region in a transistor?
(a) Either emitter or collector
(b) Base
(c) Emitter
(d) Collector
Answer
Answer: (b) Base
7. The transistors provide good power amplification when they are used in
(a) Common collector configuration
(b) Common emitter configuration
(c) Common base configuration
(d) None of these
Answer
Answer: (b) Common emitter configuration
8. For a transistor the parameter b= 99. The value of the parameter is a is
(a) 0.9
(b) 0.99
(c) 1
(d) 9
Answer
Answer: (b) 0.99
9. A transistor is used in common emitter mode as an amplifier. Then
(a) The base-emitter junction will be forward biased
(b) The input signal is connected in series with the voltage applied to the base-emitter junction
(c) The base-emitter junction will be reversed biased
(d) The voltage applied to bias the base-collector junction and the input signal is connected in series
Answer
Answer: (b) The input signal is connected in series with the voltage applied to the base-emitter junction
10. In a PNP transistor the base is the N-region. Its width relative to the P-region is
(a) Smaller
(b) Larger
(c) Same
(d) Not related
Answer
Answer: (a) Smaller