Home
About
FAQs
System Requirements
In the news
Workshops
Training
Training Calendar
Request for Training
Training Status
Registration
For Teachers
For Students
For Schools
Contact us
Login
Languages
English
हिंदी
മലയാളം
తెలుగు
Français
मराठी
Español
ಕನ್ನಡ
you are here->
home
->
Physics
->
Class 12
->
Transistor characteristics
Transistor characteristics
Theory
Theory
Procedure
Animation
Simulator
Viva voce
Resources
Feedback
1)
How many p-n junctions a transistor has?
3
2
1
More than three
2)
What is the condition for the proper transistor action?
Both the junctions should be forward biased.
None of these.
The input junction is forward biased and output junction is reverse biased.
The input junction is reverse biased and output junction is forward biased.
3)
Why the thickness of base section of a transistor made small?
In order to reduce the recombination of charge carriers passing through it.
To increase the output resistance of the transistor.
None of these
To prevent the flow of charge carriers from emitter to collector.
4)
What is the current amplification factor (α) for a common emitter configuration at constant V(CE)?
α = ΔI(E) / ΔI(B)
α = ΔI(C) / ΔI(E)
α = ΔI(B) / ΔI(C)
α = ΔI(C) / ΔI(B)
5)
Choose the correct relation between the current gain of common base and common emitter configurations from the following.
β = α/(1+ α)
β = 1/(1- α)
None of these
β = α/(1- α)
6)
Which of the following is not an application of a transistor?
Oscillator
None of these
Amplifier
Switch
7)
Why a common emitter transistor is preferred over a common base transistor?
Because the current gain in CE mode is much larger than that in CB mode.
Because the current gain in CB mode is much larger than that in CE mode.
Because the thickness of emitter section is much larger than that of base section.
Because of the infinite input resistance of common base transistor
8)
How does the collector current in a junction transistor changes when the base region has large size and is heavily doped?
Increases
No change occurs
Decreases
Changes if the base is p type
9)
In which region the doping concentration of a transistor is the highest?
All regions have equal doping concentration.
Base
Emitter
Collector
10)
What is the current gain for a transistor in common emitter configuration, where I(E) = 4.2 mA and I(C) = 4 mA?
0.105
0.95
1.95
1.05
Cite this Simulator:
amrita.olabs.edu.in,. (2015). Transistor characteristics. Retrieved 21 May 2022, from amrita.olabs.edu.in/?sub=1&brch=6&sim=234&cnt=592
