MCQ on Junction Transistor: Previous trends reveal that NEET/JEE aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations.

In this post we are providing you MCQ on Junction Transistor, which will be beneficial for you in upcoming NEET, AIIMS, JEE, WBJEE, Medical and Engineering Exams.

MCQ on Junction Transistor

Q1. 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

Q2. 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

Q3. Which is the least doped region in a transistor?
a) Either emitter or collector
b) Base
c) Emitter
d) Collector

Q4. 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

Q5.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

Q6. 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

Q7. 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) 0.4mA
b) 0.2mA
c) 0.29 mA
d) 0.35 mA

Q8. 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

Q9. 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

Q10. 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

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