GATE EC question library

Practise GATE EC Electronics and Communication previous year questions free. Browse by subject, syllabus topic, year and question type, with answers and available solutions.

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SubjectTopicYearType

The voltage

V

in the figure is

A deterministic signal has the power spectrum given in the figure is, The minimum sampling rate needed to completely represent this signal is

A probability density fucntion is given by

p(x)=\mathrm{K} e^{-x^2 / 2}-\infty<x<\infty

. The value of

K

should be

The line code that has zero

\text{dc}

component for pulse transmission of random binary data is

A rectangular air-filled waveguide has cross section of

4 \mathrm{~cm} \times 10 \mathrm{~cm}

. The minimum frequency which can propagate in the waveguide is

A transmission line of

50 \; \Omega

characteristic impedance is terminated with a

100 \; \Omega

resistance. The minimum impedance measured on the line is equal to

The Laplace Transform of

e \alpha t \cos (\alpha \; t)

is equal to

The function

f(t)

has the Fourier Transform

g(\omega)

. The Fourier Transform

f f(t) g(t)\left(=\int_{-\infty}^{\infty} g(t) e^{-j \omega t} d t\right)

The voltage

\mathrm{V}

in the figure is always equal to

The voltage

\mathrm{V}

in the figure is equal to

The current

i_4

in the circuit of the figure is equal to

In an

8085 \; \mu \; \mathrm{P}

system, the

\text{RST}

instruction will cause an interrupt

The output of the logic gate in the figure is

The inverter

74 \; \mathrm{ALSO} 4

has the following specifications

\begin{array}{l} \mathrm{I}_{\text{OH } \max }=-0.4 \mathrm{~mA}, \mathrm{l}_{\text{OLmax }}=8 \mathrm{~mA}, \mathrm{l}_{i H_{\max }}=20 \mathrm{~mA} \text{, } \\ \mathrm{l}_{\text{iLmax }}=-0.1 \mathrm{~mA} \text{, } \end{array}

The fan-out based on the above will be

In standard

\text{TTL}

, the 'totem pole' stage refers to

2

bit binary multiplier can be implemented using

Each cell of a Static Random Access Memory contains

In a common emitter

\text{BJT}

amplifier, the maximum usable supply voltage is limited by

For a

\text{MOS}

capacitor fabricated on a

p

-type semiconductor, strong inversion occurs when

A cascade amplifier stage is equivalent to