Electronics and Communication Engineering - Analog Electronics

6. 

In a Darlington pair

A. the emitter of first transistor drives the base of the second
B. the base of the first transistor drives the emitter of the second
C. emitters of the two transistors are connected through a resistor
D. none of the above

Answer: Option A

Explanation:

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7. 

Figure shows a zener circuit and characteristic of the zener used. If R2 is the lowest load resistance, then for proper voltage regulation R1 must be

A. more than
B. more than
C. less than
D. less than

Answer: Option C

Explanation:

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8. 

In CC configuration, the output signals has approximately

A. the same amplitude and phase
B. opposite amplitude and phase
C. same amplitude but opposite phase
D. none of the above

Answer: Option A

Explanation:

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9. 

The PIV of a bridge rectifier is less than that of full wave rectifier with centre tapped transformer.

A. True
B. False

Answer: Option A

Explanation:

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10. 

Zero bias works only with

A. D MOSFETs
B. E MOSFETs
C. both D and E MOSFETs
D. neither D nor E MOSFETs

Answer: Option A

Explanation:

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