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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 11
6.
Gold is often diffused into silicon P-N junction devices to
increase recombination rate
reduce recombination rate
make silicon a direct gap semiconductor
make silicon semimetal
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
In a solar cell, the photovoltaic voltages is the voltage at which the resultant current is
positive
zero
negative
rated current
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The forbidden energy gap between the valence band and conduction band will be wide in case of
semiconductors
all metals
good conductors of electricity
insulators
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
At 0 K the forbidden energy gap in intrinsic semi conductor is about
10 eV
6 eV
1 eV
0.2 eV
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The resistance of a metallic wire would
increase as the operating frequency increase
decrease as the operating frequency increase
remain unaffected on increasing the operating frequency
first increase then decrease
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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