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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 20
21.
In a CE amplifier it is desired that the signal should be able to swing equally in both directions. Then the Q point should be
at the centre of ac load line
at the centre of dc load line
at the centre of collector voltage
at the centre of collector current
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
In a base driver amplifier the voltage gain is the ratio of
ac collector voltage to ac base voltage
ac emitter voltage to ac base voltage
ac collector voltage to ac emitter voltage
ac base voltage to ac emitter voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.

Assertion (A): A class C amplifier is a timed amplifier which needs a tank circuit as the load in the collector circuit of the transistor for its proper operation

Reason (R): In class C operation collector current flows for less than 180° of the ac cycle and thus flows in pulses

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.
24.
A junction Field Effect Transistor can operate in
depletion mode only
enhancement mode only
depletion and enhancement modes
neither depletion nor enhancement modes
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The re model equivalent circuit shown in figure is for
CE amplifier
CC amplifier
CB amplifier
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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