Analog Circuits Practice Test 6

1. Find the relative change in gain with negative feedback given that return ratio is 24, and feedback factor is 3, when the change in open loop gain is 2.

2. In an RC coupled CE amplifier, when the input frequency increases, which of these are incorrect?

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

4. The use of amplifier in a circuit is to _____________ for input signal.

5. Transistor in power amplifier is ___________

6. Consider the circuit shown below where h_fe=50.

Calculate the input resistance of the network.

7. In the following diagram, shaded portions are named A and B.

What are A and B?

8. Return ratio for a circuit is 220. What is the amount of feedback, correct up to 2 decimal places?

9. In three-point method the harmonics which are considered for calculating distortion is __________

10. Power delivered to load calculated by five-point method can be equal to __________
(P_ac is power delivered to load without distortion and D is the RMS of all Harmonic distortion)