Electronics & Communication Engineering - Electronics Devices and Circuits

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1.

Which of the following configurations has the lowest output impedance?                        
A. Voltage-divider B. Emitter-follower
C. Fixed-bias D. None of the above



2.

What is the typical value of the current gain of a common-base configuration?                        
A. Between 100 and 200 B. Between 1 and 50
C. Less than 1 D. Undefined



3.

An emitter-follower is also known as a                        
A. common-collector amplifier B. common-emitter amplifier
C. common-base amplifier D. Darlington pair




4.

You have a need to apply an amplifier with a very high power gain. Which of the following would you choose?                        
A. emitter-follower B. common-collector
C. common-base D. common-emitter



5.

What is the voltage gain of a feedback pair connection?                        
A. 100 B. -100
C. 1 D. -1



6.

A common-emitter amplifier has ________ voltage gain, ________ current gain, ________ power gain, and ________ input impedance.                        
A. high, low, high, low B. low, low, low, high
C. high, high, high, low D. high, high, high, high



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