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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 19
6.
Which configuration has high input impedance and low output impedance?
CB
CE
CC
CB and CE
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.

Assertion (A): An ac amplifier uses coupling capacitors at input and output

Reason (R): The capacitive reactance varies inversely with frequency. It is infinite for dc

Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Common base configuration is little used because
it has low input impedance
it has high input impedance
it does not heat up
it has very high gain
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
In figure it is desired that output wave is symmetrical. Then
both diodes should be similar and |V1| = |V2|
both diodes should be similar
|V1| = |V2|
either (a) or (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
If the plate supply voltage for a plate modulated class C amplifier is E volts, the maximum plate-cathode voltage could be almost as high as
E
E/2
2E
4E
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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