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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 13
6.
Which of the following is not a semiconductor?
Silicon
Calcium arsenide
Germanium
Zinc sulphide
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
At absolute temperature
the forbidden energy gap in germanium is higher than that in silicon
the forbidden energy gap in germanium and silicon are equal
the forbidden energy gap in silicon is higher than that in germanium
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
If E is electric field intensity, the current density due to field emission is proportional to
E
E2
E2.5
E3/2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
When a high voltage reference is required it is advantageous to use two or more zener diodes in series to allow
higher voltage
higher dissipation
lower temperature coefficient
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.

Assertion (A): When p-n junction is forward biased, steady current flows.

Reason (R): When a p-n junction is forward biased, free electrons cross the junction from n to p and holes from p to n.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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