Analog Circuits Mock Test 6

10%

Question 1 of 10

1. Amplitude distortion is due to ___________

Linear amplification

Shift in Q-point

Small input signal

Change in input

Question 1 of 10

Question 2 of 10

2. Input stage of power amplifier is also called ___________

Beginning stage

First op

Front end

Normal stage

Question 2 of 10

Question 3 of 10

3. Consider the circuit shown below.

Consider A: Current-shunt feedback
B: Current-series feedback
C: Voltage-shunt feedback
D: Voltage-series feedback
Which of the above are present?

B only

A only

A and B

A and D

Question 3 of 10

Question 4 of 10

4. Consider the open loop response. An unknown feedback is applied. Choose the correct output of the new system from the following.

Output response of Increased frequency distortion

analog-circuits-questions-answers-effects-feedback-q8a

Output response of No change in frequency distortion.

analog-circuits-questions-answers-effects-feedback-q8d

Output response of Decreased frequency distortion

analog-circuits-questions-answers-effects-feedback-q8c

Output response of Decreased frequency distortion

analog-circuits-questions-answers-effects-feedback-q8b

Question 4 of 10

Question 5 of 10

5. Consider given circuit.

What is the feedback configuration?

Voltage series feedback

Current shunt feedback

Voltage shunt feedback

Current series feedback

Question 5 of 10

Question 6 of 10

6. In a class B amplifier, it is found that DC power is 25W, find the ac power.

10 W

25 W

62.5 W

50 W

Question 6 of 10

Question 7 of 10

7. Given the following circuit.

It is given that h_fe=55, h_ie=1kΩ, h_oe=25μΩ^-1. Calculate the net current gain and the voltage gain of the network.

A_I=192.6, A_V=1

A_I=1, A_V=220

A_I=192.6, A_V=55

A_I=192.6, A_v=220

Question 7 of 10

Question 8 of 10

8. For any cascaded amplifier network, which of these are incorrect?

Cascading increases gain

The overall output resistance is less than the lowest output resistance in all amplifiers used

Loading effect occurs

Overall input resistance is equal to the input resistance of the first amplifier

Question 8 of 10

Question 9 of 10

9. Which of the following class have a theoretical efficiency of 78.5%?

Class D

Class C

Class A

Class B

Question 9 of 10

Question 10 of 10

10. Transistor in power amplifier is ___________

A op-amp

A voltage generating device

A passive device

An active device

Question 10 of 10