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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 17
6.
The ac input voltage of an amplifier
is always equal to ac signal voltage
may be equal to or more than ac signal voltage
is always less than ac signal voltage
may be equal or more or less than ac signal voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.

Assertion (A): Negative feedback reduces the gain of an amplifier

Reason (R): Negative feedback is very commonly used in amplifier circuits

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.
In figure the coordinates of Q point on the load line are (Neglect VBE)
IC = 10 mA, VCE = 15 V
IC = 5 mA, VCE = 22.5 V
IC = 5 mA, VCE = 15 V
IC = 10 mA, VCE = 22.5 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
In the re model of a BJT amplifier, the ac resistance of diode at room temperature is about (IE is quiescent emitter current)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The emitter resistor RE in the emitter of CE amplifier stabilizes the dc operating point against variation in
temperature only
β of transistor
both temperature and β
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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