Electronics - Bipolar Junction Transistors (BJT)

Exercise :: Bipolar Junction Transistors (BJT) - General Questions

26. 

Often a common-collector will be the last stage before the load; the main function(s) of this stage is to:

A. provide voltage gain
B. provide phase inversion
C. provide a high-frequency path to improve the frequency response
D. buffer the voltage amplifiers from the low-resistance load and provide impedance matching for maximum power transfer

Answer: Option D

Explanation:

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27. 

For a C-C configuration to operate properly, the collector-base junction should be reverse biased, while forward bias should be applied to which junction?

A. collector-emitter
B. base-emitter
C. collector-base
D. cathode-anode

Answer: Option A

Explanation:

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28. 

The input/output relationship of the common-collector and common-base amplifiers is:

A. 270 degrees
B. 180 degrees
C. 90 degrees
D. 0 degrees

Answer: Option D

Explanation:

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29. 

If a transistor operates at the middle of the dc load line, a decrease in the current gain will move the Q point:

A. off the load line
B. nowhere
C. up
D. down

Answer: Option D

Explanation:

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30. 

Which is the higher gain provided by a C-E configuration?

A. voltage
B. current
C. resistance
D. power

Answer: Option D

Explanation:

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