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 tagged gate2018ec
0
votes
1
answer
1
GATE ECE 2018  GA Question: 9
A cab was involved in a hit and run accident at night. You are given the following data about the cabs in the city and the accident. 85% of cabs in the city are green and the remaining cabs are blue. A witness identified the cab involved ... tune. Which of the following options is closest to the probability that the accident was caused by a blue cab? 12% 15% 41% 80%
asked
Feb 19, 2018
in
Numerical Ability
by
gatecse
(
1.5k
points)

120
views
gate2018ec
numericalability
probability
0
votes
1
answer
2
GATE ECE 2018  GA Question: 8
The Cricket Board has long recognized John's potential as a leader of the team. However, his onfield temper has always been a matter of concern for them since his junior days. While this aggression has filled stadia with diehard fans. it has taken a toll on his own batting. ... (ii) and (iii) only (iii) and (iv) only (ii) and (iv) only (i), (ii), (iii) and (iv)
asked
Feb 19, 2018
in
Verbal Ability
by
gatecse
(
1.5k
points)

115
views
gate2018ec
verbalability
verbalreasoning
passagereading
0
votes
1
answer
3
GATE ECE 2018  GA Question: 7
Two alloys $A$ and $B$ contain gold and copper in the ratios of $2:3$ and $3: 7$ by mass, respectively. Equal masses of alloys $A$ and $B$ are melted to make an alloy $C.$ The ratio of gold to copper in alloy $C$ is$:$ $5:10$ $7:13$ $6:11$ $9:13$
asked
Feb 19, 2018
in
Numerical Ability
by
gatecse
(
1.5k
points)

77
views
gate2018ec
numericalability
ratioproportions
0
votes
1
answer
4
GATE ECE 2018  GA Question: 6
Leila aspires to buy a car worth Rs.$10,00,000$ after $5$ years. What is the minimum amount in Rupees that she should deposit now in a bank which offers $10\%$ annual rate of interest, if the interest was compounded annually? $5,00,000$ $6,21,000$ $6,66,667$ $7,50,000$
asked
Feb 19, 2018
in
Numerical Ability
by
gatecse
(
1.5k
points)

79
views
gate2018ec
numericalability
compoundinterest
0
votes
1
answer
5
GATE ECE 2018  GA Question: 5
A $1.5$ m tall person is standing at a distance of $3$ m from a lamp post. The light from the lamp at the top of the post casts her shadow. The length of the shadow is twice her height. What is the height of the lamp post in meters? $1.5$ $3$ $4.5$ $6$
asked
Feb 19, 2018
in
Numerical Ability
by
gatecse
(
1.5k
points)

142
views
gate2018ec
numericalability
geometry
0
votes
5
answers
6
GATE ECE 2018  GA Question: 10
A coastal region with unparalleled beauty is home to many species of animals. It is dotted with coral reefs and unspoilt white sandy beaches. It has remained inaccessible to tourists due to poor connectivity and lack of accommodation. A ... on the decline and could soon vanish. Helicopter connectivity would lead to an increase in tourists coming to the region.
asked
Feb 19, 2018
in
Verbal Ability
by
gatecse
(
1.5k
points)

851
views
gate2018ec
verbalability
verbalreasoning
passagereading
0
votes
1
answer
7
GATE ECE 2018  GA Question: 1
“By giving him the last _______ of the cake, you will ensure lasting _______ in our house today.” The words that best fill the blanks in the above sentence are peas, piece piece, peace peace, piece peace, peas
asked
Feb 19, 2018
in
Verbal Ability
by
gatecse
(
1.5k
points)

67
views
gate2018ec
verbalability
mostappropriateword
0
votes
1
answer
8
GATE ECE 2018  GA Question: 2
“Even though there is a vast scope for its _______, tourism has remained a/an ________ area.” The word that best fill the blanks in the above sentence are improvement, neglected rejection, approved fame, glum interest, disinterested
asked
Feb 19, 2018
in
Verbal Ability
by
gatecse
(
1.5k
points)

93
views
gate2018ec
verbalability
mostappropriateword
0
votes
1
answer
9
GATE ECE 2018  GA Question: 3
If the number $715\blacksquare423$ is divisible by $3(\blacksquare$ denotes the missing digit in the thousandths place$),$ then the smallest whole number in the place of $\blacksquare$ is _________. $0$ $2$ $5$ $6$
asked
Feb 19, 2018
in
Numerical Ability
by
gatecse
(
1.5k
points)

75
views
gate2018ec
numericalability
numbersystem
0
votes
1
answer
10
GATE ECE 2018  GA Question: 4
What is the value of $1+\frac{1}{4}+\frac{1}{16}+\frac{1}{256}+ \cdots?$ $2$ $\frac{7}{4}$ $\frac{3}{2}$ $\frac{4}{3}$
asked
Feb 19, 2018
in
Numerical Ability
by
gatecse
(
1.5k
points)

108
views
gate2018ec
numericalability
geometricprogression
0
votes
0
answers
11
GATE ECE 2018  Question: 55
Let $X\left[ k \right ] = k + 1,0\leq k\leq 7$ be $8$point $\:\text{DFT}\:$ of a sequence $x[n]$. where $X\left [ k \right ]=\sum_{n=0}^{N1}x \left [ n \right ]e^{j2\pi nk/N}$. The value (correct to two decimal places) of $\sum_{n=0}^{3}x \left [ 2n \right ]$ is ________.
asked
Feb 19, 2018
in
Calculus
by
gatecse
(
1.5k
points)

49
views
gate2018ec
numericalanswers
calculus
0
votes
1
answer
12
GATE ECE 2018  Question: 48
The cutoff frequency of $TE_{01}$ mode of an air filled rectangular waveguide having inner dimensions $a\:\text{cm} \: \times \: b\: \text{cm}\:\left ( a> b \right )$ is twice that of the dominant $TE_{10}$ mode. When the waveguide is operated ... the guide wavelength is found to be $4\:\text{cm}$. The value of $b$ (in cm, correct to two decimal places) is ________.
asked
Feb 19, 2018
in
Electromagnetics
by
gatecse
(
1.5k
points)

55
views
gate2018ec
numericalanswers
electromagnetics
waveguides
0
votes
0
answers
13
GATE ECE 2018  Question: 51
The contour $C$ given below is on the complex plane $z=x+j y,$ where $j=\sqrt{1}.$ The value of the integral $\displaystyle{}\dfrac{1}{\pi j}\oint _{C}\dfrac{dz}{z^{2}1}$ is _______.
asked
Feb 19, 2018
in
Complex Analysis
by
gatecse
(
1.5k
points)

169
views
gate2018ec
numericalanswers
complexanalysis
0
votes
0
answers
14
GATE ECE 2018  Question: 50
The position of a particle $y\left ( t \right )$ is described by the differential equation: $\frac{d^{2}y}{dt^{2}}=\frac{dy}{dt}\frac{5y}{4}.$ The initial conditions are $y\left ( 0 \right )=1$ and $\frac{dy}{dt}\mid_{t=0}=0$. The position (accurate to two decimal places) of the particle at $t=\pi$ is _________.
asked
Feb 19, 2018
in
Differential Equations
by
gatecse
(
1.5k
points)

33
views
gate2018ec
numericalanswers
differentialequations
secondorderdifferentialequation
0
votes
0
answers
15
GATE ECE 2018  Question: 47
The logic gates shown in the digital circuit below use strong pulldown $\text{nMOS}$ transistors for LOW logic level at the outputs. When the pulldowns are off, highvalue resistors set the output logic levels to HIGH (i.e. the pullups are weak). Note that some nodes ... values of $X_{3}X_{2}X_{1}X_{0}$ (out of the $16$ possible values) that give $Y=1$ is ________.
asked
Feb 19, 2018
in
Digital Circuits
by
gatecse
(
1.5k
points)

69
views
gate2018ec
numericalanswers
digitalcircuits
combinationalcircuits
logicgates
0
votes
0
answers
16
GATE ECE 2018  Question: 52
Let $r=x^{2}+yz$ and $z^{3}xy+yz+y^{3}=1.$ Assume that $x$ and $y$ are independent variables. At $\left( x,y,z \right)=\left ( 2,1,1 \right ),$ the value (correct to two decimal places) of $\dfrac{\partial r}{\partial x}$ is _________ .
asked
Feb 19, 2018
in
Calculus
by
gatecse
(
1.5k
points)

37
views
gate2018ec
numericalanswers
calculus
partialderivatives
0
votes
0
answers
17
GATE ECE 2018  Question: 49
A uniform plane wave traveling in free space and having the electric field ... ) as shown in the figure and there is no reflected wave. The relative permittivity (correct to two decimal places) of the dielectric medium is __________.
asked
Feb 19, 2018
in
Electromagnetics
by
gatecse
(
1.5k
points)

52
views
gate2018ec
numericalanswers
electromagnetics
planewavesandproperties
0
votes
0
answers
18
GATE ECE 2018  Question: 46
In the circuit shown below, a positive edgetriggered $D$ FlipFlop is used for sampling input data $D_{in}$ using clock $CK$. The XOR gate output $3.3$ volts for logic HIGH and $0$ volts for logic LOW levels. The data bit and clock periods are ... period is $0.3$, the average value (in volts, accurate to two decimal places) of the voltage at node $X$, is _________.
asked
Feb 19, 2018
in
Digital Circuits
by
gatecse
(
1.5k
points)

63
views
gate2018ec
numericalanswers
digitalcircuits
sequentialcircuit
flipflops
0
votes
0
answers
19
GATE ECE 2018  Question: 54
A band limited lowpass signal $x(t)$ of bandwidth $5\:kHz$ is sampled at a sampling rate $f_{s}$.The signal $x(t)$ is reconstructed using the reconstruction filter $H(f)$ whose magnitude response is shown below: The minimum sampling rate $f_{s}(\text{in}\: kHz)$ for perfect reconstruction of $x(t)$ is ________.
asked
Feb 19, 2018
in
Continuoustime Signals
by
gatecse
(
1.5k
points)

23
views
gate2018ec
numericalanswers
continuoustimesignals
signalsandsystems
samplingtheorem
0
votes
0
answers
20
GATE ECE 2018  Question: 53
Consider the network shown below with $R_{1}=1\:\Omega,R_{2}=2\:\Omega$ and $R_{3}=3\:\Omega.$ The network is connected to a constant voltage source of $11\:V$. The magnitude of the current (in amperes, accurate to two decimal places ) through the source is _________.
asked
Feb 19, 2018
in
Network Solution Methods
by
gatecse
(
1.5k
points)

56
views
gate2018ec
numericalanswers
networksolutionmethods
0
votes
0
answers
21
GATE ECE 2018  Question: 44
A solar cell of area $1.0\:cm^{2},$ operating at $1.0$ sun intensity, has a short circuit current of $20\: mA$, and an open circuit voltage of $0.65\: V$. Assuming room temperature operation and thermal equivalent voltage of $26\: mV$, the open circuit voltage (in volts, correct to two decimal places) at $0.2$ sun intensity is _________.
asked
Feb 19, 2018
in
Electronic Devices
by
gatecse
(
1.5k
points)

37
views
gate2018ec
numericalanswers
electronicdevices
0
votes
1
answer
22
GATE ECE 2018  Question: 42
The figure below shows the Bode magnitude and phase plots of a stable transfer function $G\left ( s \right )=\dfrac{n_{0}}{s^{3}+d_{2}s^{2}+d_{1}s+d_{0}}.$ Consider the negative unity feedback configuration with gain $k$ in the feedforward path. The closed loop is stable for $k < k_{0}.$ The maximum value of $k_{0}$ is _________.
asked
Feb 19, 2018
in
Network Solution Methods
by
gatecse
(
1.5k
points)

132
views
gate2018ec
numericalanswers
networksolutionmethods
transferfunction
0
votes
0
answers
23
GATE ECE 2018  Question: 41
For a unity feedback control system with the forward path transfer function $G\left ( s \right )=\dfrac{K}{s\left ( s+2 \right )}$The peak resonant magnitude $M_{r}$ of the closedloop frequency response is $2$. The corresponding value of the gain $\text{K}$ (correct to two decimal places) is _________.
asked
Feb 19, 2018
in
Network Solution Methods
by
gatecse
(
1.5k
points)

42
views
gate2018ec
numericalanswers
networksolutionmethods
transferfunction
0
votes
0
answers
24
GATE ECE 2018  Question: 37
A $dc$ current of $26\:\mu A$ flows through the circuit shown. The diode in the circuit is forward biased and it has an ideality factor of one. At the quiescent point, the diode has a junction capacitance of $0.5\:nF$. Its neutral region ... $\mu A$, correct to one decimal place) is __________.
asked
Feb 19, 2018
in
Analog Circuits
by
gatecse
(
1.5k
points)

106
views
gate2018ec
numericalanswers
analogcircuits
0
votes
0
answers
25
GATE ECE 2018  Question: 38
An opamp based circuit is implemented as shown below. In the above circuit, assume the opamp to be ideal. The voltage (in volts, correct to one decimal place) at node $A$, connected to the negative input of the opamp as indicated in the figure is ________.
asked
Feb 19, 2018
in
Analog Circuits
by
gatecse
(
1.5k
points)

57
views
gate2018ec
numericalanswers
analogcircuits
opamps
0
votes
0
answers
26
GATE ECE 2018  Question: 45
A junction is made between $p^{Si}$ with doping density $N_{A1}=10^{15}cm^{3}$ and $p^{Si}$ with doping density $N_{A2}=10^{17}cm^{3}.$ Given: Boltzmann constant $k=1.38\times 10^{23}J\cdot K^{1},$ electronic charge ... the magnitude of the builtin potential (in volts, correct to two decimal places) across this junction will be __________.
asked
Feb 19, 2018
in
Digital Circuits
by
gatecse
(
1.5k
points)

45
views
gate2018ec
numericalanswers
boltzmanconstant
doping
digitalcircuits
0
votes
0
answers
27
GATE ECE 2018  Question: 40
A random variable $X$ takes values $0.5$ and $0.5$ with probabilities $\dfrac{1}{4}$ and $\dfrac{3}{4}$, respectively. The noisy observation of $X\:\text{is}\:Y=X+Z,$ where $Z$ ... $\alpha$ (accurate to two decimal places) is ________.
asked
Feb 19, 2018
in
Probability and Statistics
by
gatecse
(
1.5k
points)

31
views
gate2018ec
numericalanswers
probabilityandstatistics
propability
randomvariable
0
votes
0
answers
28
GATE ECE 2018  Question: 39
The input $4\sin c(2t)$ is fed to a Hilbert transformer to obtain $y( t),$ as shown in the figure below: Here $\sin c \left ( x\right )=\dfrac{\sin\left ( \pi x \right )}{\pi x}.$ The value (accurate to two decimal places) of $\int ^{\infty }_{\infty } \mid y( t ) \mid ^{2}dt$ is ________.
asked
Feb 19, 2018
in
Continuoustime Signals
by
gatecse
(
1.5k
points)

41
views
gate2018ec
numericalanswers
hilberttransformer
0
votes
0
answers
29
GATE ECE 2018  Question: 43
In the circuit shown below, the $(W/L)$ value for $M_{2}$ is twice that for $M_{1}$. The two $\text{nMOS}$ transistors are otherwise identical. The threshold voltage $V_{T}$ for both transistors is $1.0\:V$. Note that $V_{GS}$ for $M_{2}$ ... $V_{x}$ is ________.
asked
Feb 19, 2018
in
Analog Circuits
by
gatecse
(
1.5k
points)

37
views
gate2018ec
numericalanswers
analogcircuits
nmostransistor
0
votes
0
answers
30
GATE ECE 2018  Question: 36
For the circuit given in the figure, the magnitude of the loop current (in amperes, correct to three decimal places) $0.5$ second after closing the switch is _______.
asked
Feb 19, 2018
in
Analog Circuits
by
gatecse
(
1.5k
points)

40
views
gate2018ec
numericalanswers
analogcircuits
0
votes
0
answers
31
GATE ECE 2018  Question: 35
For the circuit given in the figure, the voltage $V_{c}$ (in volts) across the capacitor is $1.25\sqrt{2}\sin\left ( 5t0.25\pi \right )$ $1.25\sqrt{2}\sin\left ( 5t0.125\pi \right )$ $2.5\sqrt{2}\sin\left ( 5t0.25\pi \right )$ $2.5\sqrt{2}\sin\left ( 5t0.125\pi \right )$
asked
Feb 19, 2018
in
Analog Circuits
by
gatecse
(
1.5k
points)

29
views
gate2018ec
analogcircuits
0
votes
0
answers
32
GATE ECE 2018  Question: 33
The distance (in meters) a wave has to propagate in a medium having a skin depth of $0.1\:m$ so that the amplitude of the wave attenuates by $20\:dB$, is $0.12$ $0.23$ $0.46$ $2.3$
asked
Feb 19, 2018
in
Analog Circuits
by
gatecse
(
1.5k
points)

36
views
gate2018ec
analogcircuits
0
votes
0
answers
33
GATE ECE 2018  Question: 29
The state equation and the output equation of a control system are given below: $\dot{x}=\begin{bmatrix} 4 & 1.5\\ 4& 0 \end{bmatrix}x+\begin{bmatrix} 2\\ 0 \end{bmatrix}u,$ $y=\begin{bmatrix} 1.5 & 0.625 \end{bmatrix}x.$ The transfer function representation of the ... $\dfrac{4s+1.5}{s^{2}+4s+6}$ $\dfrac{6s+5}{s^{2}+4s+6}$
asked
Feb 19, 2018
in
Network Solution Methods
by
gatecse
(
1.5k
points)

44
views
gate2018ec
networksolutionmethods
stateequations
0
votes
0
answers
34
GATE ECE 2018  Question: 28
Consider a white Gaussian noise process $\text{N(t)}$ with twosided power spectral density $S_{N}\left ( f \right )=0.5\:W/Hz$ as input to a filter with impulse response $0.5e^{t^{2}/2}$ (where $t$ is in seconds) resulting in output $Y(t)$. The power in $Y(t)$ in watts is $0.11$ $0.22$ $0.33$ $0.44$
asked
Feb 19, 2018
in
Communications
by
gatecse
(
1.5k
points)

38
views
gate2018ec
gaussiannoise
autocorrelationandpowerspectraldensity
communications
0
votes
0
answers
35
GATE ECE 2018  Question: 30
Red (R), Green(G) and Blue (B) Light Emitting Diodes (LEDs) were fabricated using $\text{pn}$ junctions of three different inorganic semiconductors having different bandgaps. The builtin voltages of red,green and blue diodes are $V_{R}$, $V_{G}$ and $V_{B},$respectively. Assume donor ... $V_{R}<V_{G}<V_{B}$ $V_{R}=V_{G}=V_{B}$ $V_{R}>V_{G}<V_{B}$
asked
Feb 19, 2018
in
Electronic Devices
by
gatecse
(
1.5k
points)

38
views
gate2018ec
electronicdevices
pnjunction
+1
vote
1
answer
36
GATE ECE 2018  Question: 31
A fourvariable Boolean function is realized using $4\times 1$ multiplexers as shown in the figure. The minimized expression for $\text{F(U,V,W,X)}$ is $\left ( UV+\overline{U}\:\overline{V}\right )\overline{W}$ ... $\left ( U\:\overline{V}+\overline{U}\:V\right )\left (\overline{W}\: \overline{X}+\overline{W}\:X\right )$
asked
Feb 19, 2018
in
Digital Circuits
by
gatecse
(
1.5k
points)

78
views
gate2018ec
digitalcircuits
combinationalcircuits
multiplexers
0
votes
0
answers
37
GATE ECE 2018  Question: 32
A $2\times 2$ ROM array is built with the help of diodes as shown in the circuit below. Here $W0$ and $W1$ are signals that select the word lines and $B0$ and $B1$ are signals that are output of the sense amps based on the stored data corresponding to the ... $\begin{bmatrix} 1 &0 \\ 1&0 \end{bmatrix}$ $\begin{bmatrix} 1 &1 \\ 0&0 \end{bmatrix}$
asked
Feb 19, 2018
in
Digital Circuits
by
gatecse
(
1.5k
points)

36
views
gate2018ec
digitalcircuits
rom
0
votes
0
answers
38
GATE ECE 2018  Question: 34
A curve passes through the point $\left ( x=1,y=0 \right )$ and satisfies the differential equation $\dfrac{\mathrm{dy} }{\mathrm{d} x}=\dfrac{x^{2}+y^{2}}{2y}+\dfrac{y}{x}.$ The equation that describes the curve is $\ln\left (1+\dfrac{y^{2}}{x^{2}}\right)=x1$ ... $\ln\left (1+\dfrac{y}{x}\right)=x1$ $\dfrac{1}{2}\ln\left (1+\dfrac{y}{x}\right)=x1$
asked
Feb 19, 2018
in
Differential Equations
by
gatecse
(
1.5k
points)

42
views
gate2018ec
differentialequations
0
votes
0
answers
39
GATE ECE 2018  Question: 23
Let $X_{1},\:X_{2},\:X_{3}$ and $X_{4}$ be independent normal random variable with zero mean and unit variance. The probability that $X_{4}$ is the smallest among the four is ________.
asked
Feb 19, 2018
in
Probability and Statistics
by
gatecse
(
1.5k
points)

44
views
gate2018ec
numericalanswers
probabilityandstatistics
probability
randomvariable
variance
0
votes
0
answers
40
GATE ECE 2018  Question: 24
Taylor series expansion of $f\left ( x \right )=\int ^{x}_{0}e^{\left ( \frac{t^{2}}{2} \right )}dt$ around $x=0$ has the form $f\left ( x \right )={a}_{0}+a_{1}x+a_{2}x^{2}+...$ The coefficient $a_{2}$ (correct to two decimal places) is equal to ________.
asked
Feb 19, 2018
in
Calculus
by
gatecse
(
1.5k
points)

37
views
gate2018ec
numericalanswers
calculus
taylorseries
Page:
1
2
next »
Exact tag match
Welcome to GO Electronics, where you can ask questions and receive answers from other members of the community.
1,174
questions
78
answers
11
comments
43,968
users