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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 9
11.

Assertion (A): The duty cycle of a class C amplifier affects the power dissipation of transistor

Reason (R): At higher harmonics the efficiency of a class C amplifier becomes poor

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.
12.
If the op-amp in figure has a unity gain frequency of 1 MHz, the cut off frequency is
100 kHz
1 MHz
10 MHz
90 MHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
In a self bias circuit for CE amplifier the collector supply voltage is made twice. The collector current will
decrease
increase
remain the same
increase or decrease
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
In a full wave voltage doubler circuit, the input frequency is 560 Hz. The ripple frequency is
25 Hz
50 Hz
100 Hz
200 Hz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.

Assertion (A): A tuned amplifier uses a parallel tuned circuit

Reason (R): A tuned amplifier is used to amplify a narrowband frequencies

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.
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