WorksheetsTransistor and Semiconductor Quiz
Total questions: 20
Worksheet time: 30mins
Which statement is FALSE about forward bias arrangement?
Depletion layer is widened
p-type is connected to +ve terminal and n-type to -ve terminal
it allows current flows in one direction
The bipolar transistor configuration most often used for matching a high input impedance to a low output impedance puts signal ground at _________
the emitter
the base
any point, it doesn’t matter
the collector
Which statement is TRUE about reverse bias?
It has wide depletion layer
Current is allowed to pass through & lights up the bulb
Electrons are crossing the depletion layer & fill in the hole
Which of these atom is the pentavalent atom?
Boron
Antimoni
Gallium
What is a transistor?
A semiconductor of silicon or germanium
It is a conductive silicon
It is a semiconductor crystal germanium or carbon
What characteristic clearly distinguishes semiconductors from metals and nonmetals?
Electrical conductivity
Luster
Ductility
None of the ebove
Which no signal input, a bipolar transistor would have the least IC when _________
The E-B current is high
The E-B junction is forward-biased
The E-B junction is reverse-biased
The emitter is grounded
A bipolar transistor has ____________.
Three P-N junctions
Three semiconductor layers
Two N-type layers around a P-type layer
A low avalanche voltage
How are called transistors?
The PN and NP
P which are the protons and neutrons, N
NPN and PNP
What do you call the three legs of a transistor?
Emitter, Base and Collector
Electron, Base and Collector
Issue, Base and Collector
Which of the following are semiconductor materials?
Germanium
Gallium arsenide
Silicon
All of the above
Which impurities should be added to pure semiconductor to make it an n-type semiconductor?
Boron
Antimony
Silicon
All of the above
Which one is NOT TRUE about p-type semiconductor?
Majority charge carrier is electron
It is made by adding Boron as impurities
Majority charge carrier is hole
Which no signal input, a bipolar transistor would have the least IC when ________
The E-B current is high
The E-B junction is forward-biased
The E-B junction is reversed-biased
The emitter is grounded
What is semiconductor diode?
An n-type semiconductor
A p-type semiconductor
A p-type semiconductor in contact with an n-type
How many electrons does trivalent atom has in its outer shell?
4
5
3
6
In common base circuit, the output is taken from _____________
The emitter
The base
The collector
More than one of the above
Suppose that the input signal to a transistor amplifier results in saturation during part of the cycle. This produces
Reduced efficiency
Nonlinear output impedance
Increase efficiency
The greatest possible amplification
Which of the following are NOT belong to instrinsic semiconductor?
Germanium
Selenium
Silicon
What is the function of diode?
To give smoothing effect in AC current
To change direction of DC into AC current
To change AC into DC current
All of the above
