Electronis Discussion
Ask us anything
Toggle navigation
GO Electronics
Email or Username
Password
Remember
Login
Register
|
I forgot my password
Activity
Questions
Unanswered
Tags
Subjects
Users
Ask
New Blog
Blogs
Exams
Recent questions
Recent
Hot!
Most votes
Most answers
Most views
Featured
Previous GATE
Recent
Hot!
Most votes
Most answers
Most views
Featured
Previous GATE
0
votes
1
answer
1
GATE2020-EC-GA: 1
The untimely loss of life is a cause of serious global concern as thousands of people get killed ____ accidents every year while many other die ____ diseases like cardio vascular disease, cancer, etc. in, of from, of during, from from, from
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
2
GATE2020-EC-GA: 2
He was not only accused of theft _____ of conspiracy. rather but also but even rather than
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
3
GATE2020-EC-GA: 3
Select the word that fits the analogy: Explicit: Implicit :: Express: _______ Impress Repress Compress Suppress
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
4
GATE2020-EC-GA: 4
The Canadian constitution requires that equal importance be given to English and French. Last year, Air Canada lost a lawsuit, and had to pay a six-figure fine to a French-speaking couple after they filed complaints about formal in-flight ... the French ones. the English announcements being longer than the French ones. equal importance being given to English and French.
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
5
GATE2020-EC-GA: 5
A superadditive function $f(\cdot)$ satisfies the following property $f\left ( x_{1} +x_{2}\right )\geq f\left ( x_{1} \right ) + f\left ( x_{2} \right )$ Which of the following functions is a superadditive function for $x > 1$? $e^{x}$ $\sqrt{x}$ $1/x$ $e^{-x}$
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
6
GATE2020-EC-GA: 6
The global financial crisis in $2008$ is considered to be the most serious world-wide financial crisis, which started with the sub-prime lending crisis in $\text{USA}$ in $2007$. The sub-prime lending crisis led to the banking ... $\rightarrow$ East Asian crisis$\rightarrow$ banking crisis$\rightarrow$ subprime lending crisis.
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
7
GATE2020-EC-GA: 7
It is quarter past three in your watch. The angle between the hour hand and the minute hand is ________. $0^{\circ}$ $7.5^{\circ}$ $15^{\circ}$ $22.5^{\circ}$
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
8
GATE2020-EC-GA: 8
A circle with centre $\text{O}$ is shown in the figure. A rectangle $\text{PQRS}$ of maximum possible area is inscribed in the circle. If the radius of the circle is $a$, then the area of the shaded portion is _______. $\pi a^{2}-a^{2}$ $\pi a^{2}-\sqrt{2}a^{2}$ $\pi a^{2}-2a^{2}$ $\pi a^{2}-3a^{2}$
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
9
GATE2020-EC-GA: 9
$a, b, c$ are real numbers. The quadratic equation $ax^{2}-bx+c=0$ has equal roots, which is $\beta$, then $\beta =b/a$ $\beta^{2} =ac$ $\beta^{3} =bc/\left ( 2a^{2} \right )$ $\beta^{2} \neq 4ac$
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
1
answer
10
GATE2020-EC-GA: 10
The following figure shows the data of students enrolled in $5$ years $(2014 to 2018)$ for two schools $P$ and $Q$. During this period, the ratio of the average number of the students enrolled in school $P$ to the average of the difference of the number of students enrolled in schools $P$ and $Q$ is _______. $8 : 23$ $23 : 8$ $23 : 31$ $31 : 23$
asked
Feb 13, 2020
in
Numerical Ability
by
jothee
(
1.4k
points)
gate2020-ec
0
votes
0
answers
11
GATE2020-EC: 1
If $v_{1},v_{2}, \dots ,v_{6}$ are six vectors in $\mathbb{R}^{4}$ , which one of the following statements is $\text{FALSE}$? It is not necessary that these vectors span $\mathbb{R}^{4}$ ... $\mathbb{R}^{4}$ , then it forms a basis for $\mathbb{R}^{4}$.
asked
Feb 13, 2020
in
Vector Analysis
by
jothee
(
1.4k
points)
gate2020-ec
vector-analysis
engineering-mathematics
+1
vote
0
answers
12
GATE2020-EC: 2
For a vector field $\overrightarrow{A}$, which one of the following is $\text{FALSE}$? $\overrightarrow{A}$ is solenoidal if $\triangledown \cdot \overrightarrow{A}=0.$ $\triangledown \times \overrightarrow{A}$ ...
asked
Feb 13, 2020
in
Vector Analysis
by
jothee
(
1.4k
points)
gate2020-ec
engineering-mathematics
vector-analysis
0
votes
0
answers
13
GATE2020-EC: 3
The partial derivative of the function $f(x, y, z) = e^{1-x\cos y} + xze^{-1/(1+y^{2})}$ with respect to $x$ at the point $(1,0,e)$ is $-1$ $0$ $1 \\$ $\dfrac{1}{e}$
asked
Feb 13, 2020
in
Differential Equations
by
jothee
(
1.4k
points)
gate2020-ec
partial-differential-equations
engineering-mathematics
0
votes
0
answers
14
GATE2020-EC: 4
The general solution of $\dfrac{\mathrm{d^{2}} y}{\mathrm{d} x^{2}}-6\dfrac{\mathrm{d} y}{\mathrm{d} x}+9y=0$ is $y=C_{1}e^{3x}+C_{2}e^{-3x}$ $y=(C_{1}+C_{2}x)e^{-3x}$ $y=(C_{1}+C_{2}x)e^{3x}$ $y=C_{1}e^{3x}$
asked
Feb 13, 2020
in
Engineering Mathematics
by
jothee
(
1.4k
points)
gate2020-ec
engineering-mathematics
0
votes
0
answers
15
GATE2020-EC: 5
The output $y[n]$ of a discrete-time system for an input $x[n]$ is $y\left [ n \right ]=\underset{-\infty \leq k\leq n}{\text{max}} \mid x\left [ k \right ] \mid$ The unit impulse response of the system is $0$ for all $n$. $1$ for all $n$. unit step signal $u\left [ n \right ].$ unit impulse signal $\delta \left [ n \right ].$
asked
Feb 13, 2020
in
Continuous-time Signals
by
jothee
(
1.4k
points)
gate2020-ec
continuous-time-signals
signals-and-systems
discrete-time-signals
impulse-response
0
votes
0
answers
16
GATE2020-EC: 6
A single crystal intrinsic semiconductor is at a temperature of $300$ $\text{K}$ with effective density of states for holes twice that of electrons. The thermal voltage is $26$ mV. The intrinsic Fermi level is shifted from mid-bandgap energy level by $18.02 \: meV$ $9.01 \: meV$ $13.45 \: meV$ $26.90 \: meV$
asked
Feb 13, 2020
in
Digital Circuits
by
jothee
(
1.4k
points)
gate2020-ec
digital-circuits
semiconductor
0
votes
0
answers
17
GATE2020-EC: 7
Consider the recombination process via bulk traps in a forward biased $pn$ homojunction diode. The maximum recombination rate is $U_{\text{max}}$ ... applied bias. With all other parameters unchanged, $U_{\text{max}}$ increases if the thermal velocity of the carriers increases.
asked
Feb 13, 2020
in
Electronic Devices
by
jothee
(
1.4k
points)
gate2020-ec
electronic-devices
0
votes
0
answers
18
GATE2020-EC: 8
The components in the circuit shown below are ideal. If the op-amp is in positive feedback and the input voltage $V_{i}$ is a sine wave of amplitude $1$ $\text{V}$, the output voltage $V_{o}$ is a non-inverted sine wave of $2$ $\text{V}$ amplitude. an inverted sine wave ... amplitude. a square wave of $5$ $\text{V}$ amplitude. a constant of either $+5$ $\text{V}$ or $-5$ $\text{V}$.
asked
Feb 13, 2020
in
Communications
by
jothee
(
1.4k
points)
gate2020-ec
communications
amplitude
0
votes
0
answers
19
GATE2020-EC: 9
In the circuit shown below, the Thevenin voltage $V_{TH}$is $2.4\:V$ $2.8\:V$ $3.6\:V$ $4.5\:V$
asked
Feb 13, 2020
in
Network Solution Methods
by
jothee
(
1.4k
points)
gate2020-ec
network-solution-methods
thevenin-theorem
0
votes
1
answer
20
GATE2020-EC: 10
The figure below shows a multiplexer where $S_{1}$ and $S{2}$ are the select lines, $I_{0}$ to $I_{3}$ are the input data lines, $\text{EN}$ is the enable line, and $\text{F(P, Q, R)}$ is the output. $\text{F}$ is $PQ+\overline{Q}R.$ $PQ+Q\overline{R}.$ $P\overline{Q}R+\overline{P}Q.$ $\overline{Q}+PR.$
asked
Feb 13, 2020
in
Digital Circuits
by
jothee
(
1.4k
points)
gate2020-ec
digital-circuits
multiplexers
0
votes
0
answers
21
GATE2020-EC: 11
The pole-zero map of a rational function $G(s)$ is shown below. When the closed contour $\Gamma$ is mapped into the $G(s)$-plane, then the mapping encircles the origin of the $G(s)$-plane once in the counter-clockwise direction. the origin of the $G(s)$- ... $-1 + j0$ of the $G(s)$-plane once in the clockwise direction.
asked
Feb 13, 2020
in
Continuous-time Signals
by
jothee
(
1.4k
points)
gate2020-ec
continuous-time-signals
poles-and-zeros
0
votes
0
answers
22
GATE2020-EC: 12
A digital communication system transmits a block of $N$ bits. The probability of error in decoding a bit is $\alpha$. The error event of each bit is independent of the error events of the other bits. The received block is declared erroneous if at least one of its bits is decoded wrongly. The ... $\alpha ^{N}$ $1-\alpha ^{N}$ $1-\left ( 1-\alpha \right )^{N}$
asked
Feb 13, 2020
in
Communications
by
jothee
(
1.4k
points)
gate2020-ec
digital-communications
communications
0
votes
0
answers
23
GATE2020-EC: 13
The impedances $Z=jX,$ for all $X$ in the range $\left ( -\infty ,\infty \right )$, map to the Smith chart as a circle of radius $1$ with centre at $(0, 0)$. a point at the centre of the chart. a line passing through the centre of the chart. a circle of radius $0.5$ with centre at $(0.5, 0)$.
asked
Feb 13, 2020
in
Electromagnetics
by
jothee
(
1.4k
points)
gate2020-ec
impedance
electromagnetics
0
votes
0
answers
24
GATE2020-EC: 14
Which one of the following pole-zero plots corresponds to the transfer function of an $\text{LTI}$ system characterized by the input-output difference equation given below? $y\left [ n \right ]=\sum ^{3}_{k=0}\left ( -1 \right )^{k}x\left [ n-k \right ]$
asked
Feb 13, 2020
in
Continuous-time Signals
by
jothee
(
1.4k
points)
gate2020-ec
poles-and-zeros
continuous-time-signals
0
votes
0
answers
25
GATE2020-EC: 15
In the given circuit, the two-port network has the impedance matrix $\begin{bmatrix} Z \end{bmatrix}=\begin{bmatrix} 40 & 60\\ 60& 120 \end{bmatrix}$. The value of $Z_{L}$ for which maximum power is transferred to the load is _____________$\Omega$.
asked
Feb 13, 2020
in
Network Solution Methods
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
network-solution-methods
two-port-network
0
votes
0
answers
26
GATE2020-EC: 16
The current in the $\text{RL}$-circuit shown below is $i\left ( t \right )=10\cos\left ( 5t-\pi /4 \right )A$. The value of the inductor $\text{(rounded off to two decimal places)}$ is _______ $\text{H}$.
asked
Feb 13, 2020
in
Network Solution Methods
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
network-solution-methods
0
votes
0
answers
27
GATE2020-EC: 17
In the circuit shown below, all the components are ideal and the input voltage is sinusoidal. The magnitude of the steady-state output $V_{o}$ ( rounded off to two decimal places) is ______ $V$.
asked
Feb 13, 2020
in
Network Solution Methods
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
network-solution-methods
steady-state
sinusoidal
0
votes
0
answers
28
GATE2020-EC: 18
In the circuit shown below, all the components are ideal. If $V_{i}$ is $+2\:V$, the current $I_{o}$ sourced by the op-amp is __________ $\text{mA}$.
asked
Feb 13, 2020
in
Analog Circuits
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
op-amps
analog-circuits
0
votes
0
answers
29
GATE2020-EC: 19
In an $8085$ microprocessor, the number of address lines required to access a $16$ K byte memory bank is ____________ .
asked
Feb 13, 2020
in
Digital Circuits
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
digital-circuits
microprocessor-8085
0
votes
0
answers
30
GATE2020-EC: 20
A $10$-bit D/A converter is calibrated over the full range from $0$ to $10$ V. If the input to the D/A converter is $13 \:A$ (in hex), the output ( rounded off to three decimal places) is __________ $V$.
asked
Feb 13, 2020
in
Digital Circuits
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
digital-circuits
data-converters
0
votes
0
answers
31
GATE2020-EC: 21
A transmission line of length $3\lambda /4$ and having a characteristic impedance of $50$ $\Omega$ is terminated with a load of $400 \Omega$. The impedance (rounded off to two decimal places) seen at the input end of the transmission line is __________ $\Omega$.
asked
Feb 13, 2020
in
Electromagnetics
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
impedance
electromagnetics
0
votes
0
answers
32
GATE2020-EC: 22
A binary random variable $X$ takes the value $+2$ or $-2$. The probability $P(X=+2)=\alpha $. The value of $\alpha$ (rounded off to one decimal place), for which the entropy of $X$ is maximum, is __________.
asked
Feb 13, 2020
in
Communications
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
entropy
communications
0
votes
0
answers
33
GATE2020-EC: 23
The loop transfer function of a negative feedback system is $G\left ( s \right )H\left ( s \right )=\frac{K(s+11)}{s(s+2)(s+8)}.$ The value of $K$, for which the system is marginally stable, is ___________.
asked
Feb 13, 2020
in
Network Solution Methods
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
network-solution-methods
transfer-function
0
votes
0
answers
34
GATE2020-EC: 24
The random variable $Y=\int_{-\infty }^{\infty }W\left ( t \right )\phi \left ( t \right )dt, \text{ where } \phi \left ( t \right )=\begin{cases} 1; & 5\leq t\leq 7 &\\ 0; & \text{otherwise} \end{cases}$ and $W(t)$ is a real white Gaussian noise process with two-sided power spectral density $S_{W}\left ( f \right )=3 W/Hz$, for all $f$. The variance of $Y$ is ________.
asked
Feb 13, 2020
in
Vector Analysis
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
vector-analysis
engineering-mathematics
gausss-theorem
0
votes
0
answers
35
GATE2020-EC: 25
The two sides of a fair coin are labelled as $0$ to $1$. The coin is tossed two times independently. Let $M$ and $N$ denote the labels corresponding to the outcomes of those tosses. For a random variable $X$, defined as $X = \text{min}(M, N)$, the expected value $E(X)$ (rounded off to two decimal places) is ___________.
asked
Feb 13, 2020
in
Engineering Mathematics
by
jothee
(
1.4k
points)
gate2020-ec
numerical-answers
engineering-mathematics
0
votes
0
answers
36
GATE2020-EC: 26
Consider the following system of linear equations. $\begin{array}{llll} x_{1}+2x_{2}=b_{1} ; & 2x_{1}+4x_{2}=b_{2}; & 3x_{1}+7x_{2}=b_{3} ; & 3x_{1}+9x_{2}=b_{4} \end{array}$ ... $b_{2}=2b_{1}$ and $3b_{1}-6b_{3}+b_{4}=0$ $b_{3}=2b_{1}$ and $3b_{1}-6b_{3}+b_{4}=0$
asked
Feb 13, 2020
in
Engineering Mathematics
by
jothee
(
1.4k
points)
gate2020-ec
engineering-mathematics
0
votes
0
answers
37
GATE2020-EC: 27
Which one of the following options contains two solutions of the differential equation $\dfrac{\mathrm{d} y}{\mathrm{d} x}=\left ( y-1 \right )x?$ $\ln\mid y-1 \mid=0.5x^{2}+C$ and $y=1$ $\ln\mid y-1 \mid=2x^{2}+C$ and $y=1$ $\ln\mid y-1 \mid=0.5x^{2}+C$ and $y=-1$ $\ln\mid y-1 \mid=2x^{2}+C$ and $y=-1$
asked
Feb 13, 2020
in
Differential Equations
by
jothee
(
1.4k
points)
gate2020-ec
differential-equations
engineering-mathematics
0
votes
0
answers
38
GATE2020-EC: 28
The current $I$ in the given network is $0 \: A$ $2.38\angle -96.37^{\circ}A$ $2.38\angle143.63^{\circ}A$ $2.38\angle-23.63^{\circ}A$
asked
Feb 13, 2020
in
Network Solution Methods
by
jothee
(
1.4k
points)
gate2020-ec
network-solution-methods
0
votes
0
answers
39
GATE2020-EC: 29
A finite duration discrete-time signal $x[n]$ is obtained by sampling the continuous-time signal $x\left ( t \right )=\cos\left ( 200\pi t \right )$ at sampling instants $t=n/400, n=0, 1, \dots ,7.$ The $8$-point discrete Fourier transform $\text{(DFT)}$ of $x[n]$ is defined ... zero. Only $X[4]$ is non-zero. Only $X[2]$ and $X[6]$ are non-zero. Only $X[3]$ and $X[5]$ are non-zero.
asked
Feb 13, 2020
in
Continuous-time Signals
by
jothee
(
1.4k
points)
gate2020-ec
continuous-time-signals
signals-and-systems
discrete-time-signals
0
votes
0
answers
40
GATE2020-EC: 30
For the given circuit, which one of the following is correct state equation? ...
asked
Feb 13, 2020
in
Network Solution Methods
by
jothee
(
1.4k
points)
gate2020-ec
network-solution-methods
state-equations
Page:
1
2
3
4
...
28
next »
Top Users
Jan 2021
Hira Thakur
120 Points
Kalyankumar ch
110 Points
jothee
10 Points
Welcome to GO Electronics, where you can ask questions and receive answers from other members of the community.
Recent questions
1,109
questions
62
answers
8
comments
43,626
users