Analog Electronics - ECE Questions and Answers

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In an amplifier the stray capacitances assume impedance at low frequencies

True

False

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In CE amplifier the base current is very high.

True

False

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In the graphical analysis of CE amplifier circuit, the upper end of load line is called

saturation point

cut off point

Q point

none of the above

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A full wave rectifier supplies a load of 1 kΩ. The a.c. Voltage applied to the diodes is 220 - 0 - 220 Volts rms. If diode resistance is neglected, then Average d.c. Voltage

220 V

200 V

198 V

0 volts

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In the graphical analysis of an amplifier circuit, the slope of dc load line depends on

load resistance only

collector supply voltage only

both load resistance and collector supply voltage

none of the above

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In figure we need an ac ground. The proper value of C is

1000 μF

100 μF

10 μF

1 μF

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For the circuit in figure the output wave shape is

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In figure, I_D = 4 mA. Then V_S =

20 V

16 V

6 V

0.6 V

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The circuit shown is

voltage series feedback amplifier

transconductance amplifier

transresistance amplifier with open circuit mutual resistance R_F

transresistance amplifier with short circuit mutual resistance R_F