Electronics and Communication Engineering - Analog Electronics

1. 

It is desired to reduce distortion in a CE amplifier circuit. We should

A. reduce emitter current
B. reduce collector current
C. reduce ac base voltage
D. reduce base emitter voltage

Answer: Option D

Explanation:

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2. 

In the circuit of figure β = 50 and VBE = 0.5 V. The quiescent value of base current IB is

A. about 28 μA
B. about 28 mA
C. about 0.28 μA
D. about 2.8 A

Answer: Option A

Explanation:

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3. 

For a push pull circuit the most favoured biasing method is

A. self bias
B. emitter bias
C. diode bias
D. collector bias

Answer: Option C

Explanation:

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4. 

In feedback amplifier the closed loop gain is nearly independent of open loop gain and depends only on the feedback factor.

A. True
B. False

Answer: Option A

Explanation:

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5. 

In a N-P-N transistor, when emitter junction is forward biased and collector junction is reverse biased, the transistor will operate in

A. active region
B. saturation region
C. cut of region
D. inverted region

Answer: Option A

Explanation:

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