ANALOG ELECTRONICS QUIZ

A D - MOSFET is considered to be a

current controlled device.

normally off device.

normally on device.

high - power switch.

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Relaxation Voltage controlled oscillators are used to generate

Triangular wave

Sinusoidal wave

Both B and C

Sawtooth wave

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When the current gain increases from 50 to 300 in an emitter-biased circuit, the collector current

is zero.

decreases by a factor of 6.

remains almost the same.

increases by a factor of 6.

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

All resistors

All capacitors

All transistors

All inductors

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The arrow direction in diode symbol indicates

direction of hole flow.

direction of electron flow.

none of these.

opposite to the direction of hole flow.

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Which of following is the fastest switching device ?

BJT.

JFET.

Triode.

MOSFET.

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The number of valence electrons in silicon atom are :

4

1

3

2

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In which mode of BJT operation are both junction forward biased

active.

saturation.

reverse active.

cut off.

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The per unit impedance of a synchorous machine is 0.242. If base voltage is increased by 1.1 times, then per unit value will be

0.242.

0.220.

0.266.

0.200.

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The AC base voltage of an emitter follower is across the

emitter diode.

DC emitter resistor.

emitter diode and external AC emitter resistance.

load resistor.

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