ANALOG ELECTRONICS QUIZ

If the collector resistor is open, the collector voltage is

unchanged.

low.

unknown.

high.

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Voltage Series (feedback also called series-shunt feedback) results in

Decrease in input impedance & increase in output impedance

Increase in both input & output impedances

Decreases in both input & output impedances

Increase in input impedance & decreases in output impedance

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A zener diode

has a constant voltage in the breakdown region.

is a battery.

has a barrier potential of 1 V.

is forward biased.

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If the emitter resistor is open, the collector voltage is

unchanged.

low.

unknown.

high.

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Doping in a semiconductor increases which quantity

Resistance

Inductance

None

Conductance

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The voltage divider biasing circuit is used in amplifiers quite often because it

limits the AC signal going to base.

reduces the DC base electric current.

makes the operating point almost independent of ÃŽÂ².

reduces the cost of the circuit.

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An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed

395mV

795mV

79.5 mV

39.5mV

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When P-type substance is connected with positive and N-type is connected with negative terminal then P-N junction diode is in ....................

None of these

Reverse biased

Forward biased

No biased

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In deriving ac equivalent circuit for an amplifier circuit we short circuit

All inductors

All resistors

All capacitors

All transistors

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In a N-type semiconductor material holes are ......................

Minority charge carriers

High charge carriers

Low charge carriers

Majority charge carriers

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