Analog Electronics - ECE Questions and Answers

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In figure, D₂ turns on when

v_i is more positive than V₁

v_i is less positive than V₁

v_i is more negative than V₂

v_i is less negative than V₂

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One of the following can be used to generate a pulse whenever triggered

flip-flop

monostable multivibrator

stable multivibrator

Schmitt trigger

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Figure shows the feedback network of one of the very popular types of sinusoidal oscillators. Which one is that?

Weinbridge oscillator

Hartley oscillator

Colpitt's oscillator

R-C phase shift oscillator

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Which amplifier has the higher power gain?

Common emitter

Common collector

Common base

Both CC and CE

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2N 2430 could be a

semi-conductor diode

dual gate MOSFET

BJT

UJT

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If r_e is ac resistance of diode, the Thevenin input impedance of a differential amplifier is

r_e

br_e

2 br_e

0.5 br_e

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In figure the trace on the CRO will be

half rectifier wave

clamped wave

no trace at all

either (a) or (b)

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The circuit shown I/P in the figure represents

Low pass filter

High pass filter

Band Pass filter

Band stop filter

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To have a centred Q point in CE amplifier

ac resistance of collector circuit

ac resistance of emitter circuit

ac resistance of collector and emitter circuit