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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 10
36.
If the value of C2 and C3 are doubled, the oscillation frequency will be
quadrupled
doubled
unchanged
halved
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Which of the following statement about JFET is correct?
In an N-channel JFET, the channel is the narrowest under zero gate bias condition
In a JFET the gates are always forward biased
In a JFET, gate-source cut off voltage is numerically equal to the pinch off voltage
It is a voltage controlled device
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.

Assertion (A): In Darlington pair, the overall β is product of individual βs

Reason (R): The voltage gain of a base driven amplifier is equal to ac collector voltage divided by ac base voltage

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.
39.
A Wien bridge oscillator uses Wien bridge for
tuning and phase shift
tuning
phase shift
either tuning or phase shift
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
A cascade amplifier will have higher cut off frequency
equal to that of single stage amplifier
less than that of single stage amplifier
more than that of single stage amplifier
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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