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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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Official PYQ2007Engineering MathematicsCalculusMCQ · 1 mark
The following plot shows a function yy which varies linearly with xx. The value of the integral I=∫12ydxI=\displaystyle{}\int_1^2 y d x is
Official PYQ2007Engineering MathematicsCalculusMCQ · 1 mark
For ∣x∣≪1|x| \ll 1, coth⁡(x)\operatorname{coth}(x) can be approximated as
Official PYQ2007Engineering MathematicsCalculusMCQ · 1 mark
lim⁡θ→0sin⁡(θ/2)θ\displaystyle{}\lim _{\theta \rightarrow 0} \frac{\sin (\theta / 2)}{\theta} is
Official PYQ2007Engineering MathematicsCalculusMCQ · 1 mark
Which one of the following functions is strictly bounded?
Official PYQ2007Engineering MathematicsCalculusMCQ · 1 mark
For the function e−xe^{-x}, the linear approximation around x=2x=2 is
Official PYQ2007Digital CircuitsNumber RepresentationsMCQ · 1 mark
X=01110\mathrm{X}=01110 and Y=11001\mathrm{Y}=11001 are two 55-bit binary numbers represented in two's complement format. The sum of X\mathrm{X} and Y\mathrm{Y} represented in two's complement format using 66 bits is
Official PYQ2007Engineering MathematicsLinear AlgebraMCQ · 1 mark
It is given that X1,X2,⋯ ,XMX_{1}, X_{2}, \cdots ,X_{M} are MM non-zero, orthogonal vectors. The dimension of the vector space spanned by the 2M2 M vectors X1,X2,⋯ ,XM,−X1,−X2,⋯ ,−XMX_{1}, X_{2}, \cdots, X_{M},-X_{1},-X_{2}, \cdots,-X_{M} is
Official PYQ2007Engineering MathematicsCalculusMCQ · 1 mark
Consider the function f(x)=x2−x−2f(x)=x^{2}-x-2. The maximum value of f(x)f(x) in the closed interval [−4,4][-4,4] is
Official PYQ2007Digital CircuitsSequential CircuitsMCQ · 1 mark
The following binary values were applied to the X\mathrm{X} and Y\mathrm{Y} inputs of the NAND latch shown in the figure in the sequence indicated below: X=0,Y=1;X=0,Y=0;X=1,Y=1.\mathrm{X}=0, \mathrm{Y}=1 ; \quad \mathrm{X}=0, \mathrm{Y}=0 ; \quad \mathrm{X}=1, \mathrm{Y}=1 \text{.} The corresponding stable P,Q\mathrm{P}, \mathrm{Q} outputs will be
Official PYQ2007Networks, Signals and SystemsContinuous-time SignalsMCQ · 1 mark
In delta modulation, the slope overload distortion can be reduced by
Official PYQ2007Networks, Signals and SystemsContinuous-time SignalsMCQ · 1 mark
In the following scheme, if the spectrum M(f)M(f) of m(t)m(t) is as shown, then the spectrum Y(f)Y(f) of y(t)y(t) will be