Electronics & Communication Engineering - Electronics Devices and Circuits

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31.

For a common-emitter amplifier, the purpose of swamping is                        
A. to minimize gain B. to reduce the effects of r'e
C. to maximize gain D. no purpose



32.

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



33.

The ________ model fails to account for the output impedance level of the device and the feedback effect from output to input.                        
A. hybrid equivalent B. re
C. None of the above D. Thevenin




34.

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



35.

What is the range of the input impedance of a common-base configuration?                        
A. A few ohms to a maximum of 50Ω B. 1kΩ to 5kΩ
C. 100kΩ to 500kΩ D. 1MΩ to 2MΩ



36.

The advantage that a Sziklai pair has over a Darlington pair is                        
A. higher current gain B. less input voltage is needed to turn it on
C. higher input impedance D. higher voltage gain



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