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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 15
21.
Holes act like
positive charges
neutral atoms
negative charges
crystals
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.

Assertion (A): Silicon is less sensitive to changes in temperature than germanium.

Reason (R): It is more difficult to produce minority carriers in silicon than in germanium.

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.
23.
The number of protons in a silicon atom is
32
28
14
4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The emitter follower is widely used in electronic instrument because
its voltage gain is less than unity
its voltage gain is very high
its O/P Impedance is low and input impedance is high
its O/P Impedance is high and I/P impedance is low
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
A cascade amplifier stage is equivalent to
a common emitter stage followed by a common stage
a common base stage followed by an emitter follower
an emitter follower stage followed by a common base stage
a common base stage followed by a common emitter stage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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