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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 6
6.
The conductivity of materials found in nature ranges from 109 ohm-1m-1 to nearly 1018 ohm-1 m-1 from this it can be concluded that the conductivity of silicon in ohm-1 cm-1 will be nearly
0.5 x 10-15
0.5 x 10-21
0.5 x 10-12
0.5 x 10-3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
At any point on the v-i characteristics of a semiconductor diode, the slope of v-i characteristics is called
resistance of diode
conductance of diode
incremental resistance of diode
incremental conductance of diode
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The collector to emitter cutoff current (ICE0) of a transmitter is related to collector to base cut off current (ICB0) as
ICE0 = ICB0
ICE0 = a ICB0
ICE0 =
ICE0 =
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Which of the following statement about the photo electric emission is incorrect?
The maximum velocity of emission varies with the frequency of incident light
The maximum velocity of emission varies with the intensity of light
The amount of photoelectric emission is directly proportional to the intensity of light
The quantum yield depends on the frequency and not the intensity of incident light
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
In a semiconductor avalanche breakdown occurs when
reverse bias exceeds the limiting value
forward bias exceeds the limiting value
forward current exceeds the limiting value
potential barrier is reduced to zero
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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