Exercise: Electronic Devices And Circuits

Questions for: Electronic Devices And Circuits

The atomic number of silicon is 14. It can be therefore concluded that
A:
a silicon atom contains 14 protons
B:
a silicon atom contains 14 neutrons
C:
a silicon atom contains 14 electrons
D:
all of the above
Answer: D
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Before doping the semiconductor material is
A:
dehydrated
B:
heated
C:
hardened
D:
purified
Answer: D
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The resistance of a metallic wire would
A:
increase as the operating frequency increase
B:
decrease as the operating frequency increase
C:
remain unaffected on increasing the operating frequency
D:
first increase then decrease
Answer: B
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At 0 K the forbidden energy gap in intrinsic semi conductor is about
A:
10 eV
B:
6 eV
C:
1 eV
D:
0.2 eV
Answer: C
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The forbidden energy gap between the valence band and conduction band will be wide in case of
A:
semiconductors
B:
all metals
C:
good conductors of electricity
D:
insulators
Answer: D
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