ANALOG ELECTRONICS QUIZ

The following are the necessary requirements of an oscillator

Frequency stability

Amplitude stability

Both A and B

Power stability

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The cascade amplifier is a multistage configuration of

CE-CC

CC-CB

CB-CC

CE-CB

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The collector current is 1.5 mA. If the current gain is 50, the base current is

3 µA.

30 µA.

3 mA.

150 µA.

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Doping in a semiconductor increases which quantity

None

Inductance

Resistance

Conductance

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The input offset electric current equals the

difference between the two base currents.

difference between the two base-emitter voltages.

average of the two base currents.

collector electric current divided by the base current.

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In a pnp transistor, the major carriers in the emitter are

free electrons.

holes.

neither.

both.

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The most commonly used semiconductor is

Germanium

Carbon

Sulphur

Silicon

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Class AB operation is often used in power large signal) amplifiers in order to

Overcome a crossover distortion

Get maximum efficiency

Reducing collector dissipation

Remove even harmonics

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What is the condition if no external potential energy is applied to the PN junction then diode ?

Forward biased

None of these

Reversed biased

Zero Bias

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The room temperature resistivity of pure silicon is

50

300

3000

6

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