Electronics and Communication Engineering - Analog Electronics

31. 

A Darlington circuit is obtained by connecting

A. two CB stages in cascade
B. two CE stages in cascade
C. a CE stages followed by CB stage
D. two emitter follower in cascade

Answer: Option A

Explanation:

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32. 

A CE amplifier has a high input signal. In the wave shape of emitter current

A. positive and negative half cycles will be symmetrical
B. positive half cycle will be elongated and negative half cycle will be compressed
C. positive half cycle will be compressed and negative half cycle will be elongated
D. the half cycles may be either elongated or compressed

Answer: Option B

Explanation:

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33. 

An inverting voltage feedback is a

A. voltage amplifier
B. current amplifier
C. current to voltage converter
D. voltage to current converter

Answer: Option C

Explanation:

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34. 

If a transistor is operating with both of its Junctions forward biased, but with the collector base forward biased, but with the collector base forward bias greater than the emitter-base forward bias, then it is operating in the

A. forward active mode
B. reverse saturation mode
C. reverse active mode
D. forward saturation mode

Answer: Option C

Explanation:

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35. 

In a CE amplifier the Q point is very close to cutoff point on the load line. This results in

A. saturation clipping
B. cut off clipping
C. both saturation and cut off clipping
D. either saturation clipping or cut off clipping

Answer: Option B

Explanation:

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