ANALOG ELECTRONICS QUIZ

Which types of device is the diode ?

None of these

Semiconductor

Insulator

Conductor

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Doping in a semiconductor increases which quantity

Inductance

None

Conductance

Resistance

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The action of JFET in its equivalent circuit can best be represented as a

Voltage controlled voltage source

Current controlled voltage source

Current controlled Current source

voltage controlled current source

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Leakage electric current in CE configuration is

not present.

very small.

normal.

very high.

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The current gain of a BJT is

gm r0

gm / r0

gm rπ

gm /rπ

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In the second approximation, the total voltage across the zener diode is the sum of the breakdown voltage and the voltage across the

source.

zener diode.

zener resistance.

series resistor.

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An Op-Amp comparator circuit employs

both B and C.

no feedback.

+ve feedback.

-ve feedback.

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The 741 C has a unity - gain frequency of

10 Hz.

20 Hz.

1 MHz.

15 MHz.

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If a transistor operates at the middle of the load line, a decrease in the current gain will move the Q point

up.

down.

nowhere.

off the load line.

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Junction field effect transistors (JFET) contain how many diodes?

1.

3.

2.

4.

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