Electronics and Communication Engineering - Analog Electronics

16. 

The phase angle of lead circuit is

A. between 0 and -90°
B. between 0 and +90°
C. 90°
D. more than 90°

Answer: Option B

Explanation:

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17. 

A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The power gain is

A. 125
B. 250
C. 1125
D. 3125

Answer: Option D

Explanation:

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18. 

The circuit of figure is

A. clipper, sine wave clipped at - 2 V
B. clamper
C. clamper, sine wave clamped at zero V
D. clipper, sine wave clipped at + 2 V

Answer: Option B

Explanation:

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19. 

The upper end of the d.c. load line is called the __________ point and the lower end is the __________ point.

A. cut off, saturation
B. saturation, active
C. saturation, cut off
D. active saturation

Answer: Option C

Explanation:

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20. 

In figure output impedance of amplifier is

A. RE
B.
C.
D. re + RE

Answer: Option C

Explanation:

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