Module 1.5

Amplifier Quiz

Try our quiz, based on the information you can find in Amplifiers Module 1. Submit your answers and see how many you get right. If you get any answers wrong. Just follow the hints to find the right answer and learn about Amplifiers as you go.

1.

If a power amplifier produces an output 10 times greater than its input, what will its power gain be, measured in deciBels?

2.

If the base current Ib of a common emitter amplifier is 40µA and the hfe of the transistor is 200, what will the collector current?

3.

In Fig 1.5.1 what is the purpose of block B?
ampquiz01-151.jpg

4.

Which of these formulae gives the voltage gain of an amplifier?

5.

Complete this sentence: "Class A bias...

6.

Complete this sentence: "Class A bias sets the quiescent current...

7.

What is the voltage gain of an amplifier at the half power points on the amplifier response curve?

8.

What is the purpose of C3 in Fig 1.5.2?
ampquiz01-152.gif

9.

In Fig 1.5.2 which component will be mainly responsible for limiting high frequency gain?

10.

What is the advantage of extending the bandwidth of audio amplifiers to frequencies higher than the audible limit?

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