Doping a semiconductor with impurity atoms:

unit 4 pretest

Quiz
•
Engineering
•
University
•
Hard
Pranjal Jog
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
a) Increases its conductivity.
b) Decreases its conductivity.
c) Does not affect its conductivity.
.
d) None of the above
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A p-type semiconductor is formed when a pure semiconductor is doped with:
a) Pentavalent impurity.
b) Trivalent impurity.
c) Divalent impurity.
d) Monovalent impurity.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The energy gap between the valence band and the conduction band in an intrinsic semiconductor is:
a) Very small.
b) Very large.
c) Zero.
d) Depends on the temperature.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a forward-biased p-n junction diode, the majority charge carriers move:
a) From p-side to n-side.
b) From n-side to p-side.
c) Both ways.
d) None of the above.
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The process of adding impurities to a semiconductor to increase its conductivity is called ____________________.
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
A semiconductor doped with a pentavalent impurity is called an ____________________ semiconductor.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The reverse saturation current of a diode
a) Increases with increasing reverse bias voltage.
b) Decreases with increasing reverse bias voltage.
c) Remains constant with increasing reverse bias voltage.
d) None of the above
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