GO Electronics
Login
Register
@
Dark Mode
Profile
Edit my Profile
Messages
My favorites
Register
Activity
Questions
Unanswered
Tags
Subjects
Users
Ask
New Blog
Blogs
Exams
Dark Mode
Recent questions tagged gate2017-ec-1
0
votes
1
answer
1
GATE ECE 2017 Set 1 | GA Question: 10
A contour line joins locations having the same height above the mean sea level. The following is a contour plot of a geographical region. Contour lines are shown at $25$ m intervals in this plot. The path from $P$ to $Q$ is best described by Up-Down-Up-Down Down-Up-Down-Up Down-Up-Down Up-Down-Up
Lakshman Patel RJIT
asked
in
Quantitative Aptitude
May 31, 2019
by
Lakshman Patel RJIT
5.0k
points
120
views
gate2017-ec-1
numerical-ability
data-interpretation
contour-plots
0
votes
0
answers
2
GATE ECE 2017 Set 1 | Question: 48
Which one of the following options correctly describes the locations of the roots of the equation $s^{4}+s^{2}+1=0$ on the complex plane? Four left half plane(LHP) roots One right half plane(RHP) root,one LHP root and two roots on the imaginary axis Two RHP roots and two LHP roots All four roots are on the imaginary axis
admin
asked
in
Complex Analysis
Nov 17, 2017
by
admin
32.7k
points
159
views
gate2017-ec-1
complex-analysis
0
votes
0
answers
3
GATE ECE 2017 Set 1 | Question: 52
A continuous time signal $x(t)=4 \cos(200\pi t)+8 \cos(400\pi t)$, where $t$ is in seconds, is the input to a linear time invariant (LTI) filter with the impulse response $h(t)=\begin{cases} \frac{2 \sin (300\pi t)}{\pi t},& t\neq 0 \\ 600, & t=0. \end{cases}$ Let $y(t)$ be the output of this filter. The maximum value of $ \mid y(t) \mid $ is _________.
admin
asked
in
Continuous-time Signals
Nov 17, 2017
by
admin
32.7k
points
84
views
gate2017-ec-1
numerical-answers
continuous-time-signals
linear-time-invariant-systems
0
votes
0
answers
4
GATE ECE 2017 Set 1 | Question: 54
The expression for an electric field in free space is , $\textbf{E}=E_{0}( \hat{x}+\hat{y}+j2 \hat{z} )e^{-j( \omega t-kx+ky)}$ where $x,y,z$ represent the special coordinates, $t$ represents time, and ... normal to the $z$-axis represents an elliptically polarized plane wave propagating along the $x - y$ plane represents a linearly polarized plane wave
admin
asked
in
Electromagnetics
Nov 17, 2017
by
admin
32.7k
points
67
views
gate2017-ec-1
plane-waves-and-properties
electromagnetics
0
votes
0
answers
5
GATE ECE 2017 Set 1 | Question: 49
The Nyquist plot of the transfer function $G(s)=\frac{K}{(s^{2}+2s+2)(s+2)}$ does not encircle the point $(-1+j0)$ for $K=10$ but does encircle the point $(-1+j0)$ for $K=100$. Then the closed loop system (having unity gain feedback) is stable ... $K=10$ and unstable for $K=100$ unstable for $K=10$ and stable for $K=100$ stable for $K=10$ and unstable for $K=100$
admin
asked
in
Control Systems
Nov 17, 2017
by
admin
32.7k
points
86
views
gate2017-ec-1
nyquist
control-systems
0
votes
0
answers
6
GATE ECE 2017 Set 1 | Question: 50
In binary frequency shift keying (FSK), the given signal waveforms are $u_{0}(t)=5\, \cos(20000\pi t)\, ;0\leq t\leq T \text{, and } \\ u_{1}(t)=5\, \cos(22000\pi t)\, ;0 \leq t \leq T,$ where $T$ is the bit-duration interval and $t$ is in seconds ... (in milliseconds) required to have $u_{0}(t)$ and $u_{1}(t)$ uncorrelated is $0.25$ ms $0.5$ ms $0.75$ ms $1.0$ ms
admin
asked
in
Communications
Nov 17, 2017
by
admin
32.7k
points
112
views
gate2017-ec-1
digital-communication
frequency-shift-keying
communications
0
votes
0
answers
7
GATE ECE 2017 Set 1 | Question: 51
Let $X(t)$ be a wide sense stationary random process with the power spectral density $S_{X}(f)$ as shown in Figure (a), where $f$ is in Hertz$(Hz)$. The random process $X(t)$ ... Select the correct option: only I is true only II and III are true only I and II are true only I and III are true
admin
asked
in
Communications
Nov 17, 2017
by
admin
32.7k
points
50
views
gate2017-ec-1
autocorrelation-and-power-spectral-density
communications
0
votes
0
answers
8
GATE ECE 2017 Set 1 | Question: 53
An optical fiber is kept along the $\hat{z}$ direction. The refractive indices for the electric fields along $\hat{x}$ and $\hat{y}$ directions in the fiber are $n_{x}=1.5000$ and $n_{y}=1.5001$, ... is circularly polarized at the input of the fiber, the minimum propagation distance after which it becomes linearly polarized, in centimeters,is______________.
admin
asked
in
Electromagnetics
Nov 17, 2017
by
admin
32.7k
points
53
views
gate2017-ec-1
polarization
optical-fiber
numerical-answers
electromagnetics
0
votes
0
answers
9
GATE ECE 2017 Set 1 | Question: 55
A half wavelength dipole is kept in the $x-y$ plane and oriented along $45^{\circ}$ from the $x$-axis. Determine the direction of null in the radiation pattern for $0\leq \phi \leq \pi$. Here the angle $\theta (0\leq \theta \leq \pi )$ is measured from the $z$-axis and ... $\theta =45^{o},\phi =90^{o}$ $\theta =90^{o},\phi =135^{o}$ $\theta =45^{o},\phi =135^{o}$
admin
asked
in
Electromagnetics
Nov 17, 2017
by
admin
32.7k
points
80
views
gate2017-ec-1
antennas
electromagnetics
0
votes
0
answers
10
GATE ECE 2017 Set 1 | Question: 44
A $4$-bit shift register circuit configured for right-shift operation, i.e. $D_{in}\rightarrow A,A\rightarrow B,B\rightarrow C,C\rightarrow D$, is shown. If the present state of the shift register is $ABCD=1101$, the number of clock cycles required to reach the state $ABCD=1111$ is _________.
admin
asked
in
Number Representations
Nov 17, 2017
by
admin
32.7k
points
144
views
gate2017-ec-1
digital-circuits
sequential-circuit
shift-registers
numerical-answers
0
votes
0
answers
11
GATE ECE 2017 Set 1 | Question: 46
A finite state machine (FSM) is implemented using the D flip-flop A and B, and logic gates, as shown in the figure below. The four possible states of the FSM are $Q_{A}Q_{B}=00,01,10$ and $11$. Assume that $X_{IN}$ is held at a constant logic ... states if $X_{IN}=0$ only two or four possible states if $X_{IN}=1$ only two or four possible states if $X_{IN}=0$
admin
asked
in
Digital Circuits
Nov 17, 2017
by
admin
32.7k
points
188
views
gate2017-ec-1
digital-circuits
sequential-circuit
counters
0
votes
0
answers
12
GATE ECE 2017 Set 1 | Question: 45
The following FIVE instructions were executed on an $8085$ microprocessor. MVI A, $33$H MVI B, $78$H ADD B CMA ANI $32$H The Accumulator value immediately after the execution of the fifth instruction is $00H$ $10H$ $11H$ $32H$
admin
asked
in
Digital Circuits
Nov 17, 2017
by
admin
32.7k
points
133
views
gate2017-ec-1
digital-circuits
microprocessor-8085
0
votes
0
answers
13
GATE ECE 2017 Set 1 | Question: 43
Which one of the following gives the simplified sum of products expression for the Boolean function $F=m_{0}+m_{2}+m_{3}+m_{5}$, where $m_{0},m_{2},m_{3}$ and $m_{5}$ are minterms corresponding to the inputs $A,B$ and $C$ with $A$ as the $MSB$ and ... $\overline{A} BC+\overline{A} \: \overline{C}+A \overline{B}C$
admin
asked
in
Digital Circuits
Nov 17, 2017
by
admin
32.7k
points
54
views
gate2017-ec-1
digital-circuits
boolean-algebra
1
vote
0
answers
14
GATE ECE 2017 Set 1 | Question: 37
As shown , a uniformly doped Silicon bar of length $L=0.1\mu m$ with a donor concentration $N_{D}=10^{16}cm^{-3}$ is illuminated at $x=0$ ... that goes to $0$ at $x=L$, the magnitude of the diffusion current density at $x=L/2$, in $A/cm^{2}$, is ___________.
admin
asked
in
Electronic Devices
Nov 17, 2017
by
admin
32.7k
points
163
views
gate2017-ec-1
numerical-answers
electronic-devices
intrinsic-and-extrinsic-silicon
carrier-transport
0
votes
0
answers
15
GATE ECE 2017 Set 1 | Question: 36
The dependence of drift velocity of electrons on electric field in a semiconductor is shown below. The semiconductor has a uniform electron concentration of $n=1 \times 10^{16} cm^{3}$ and electronic charge $q=1.6 \times 10 ^{-19}C$. If a bias ... a $1 µm$ region of this semiconductor, the resulting current density in this region, in $kA/cm^{2} $, is _____.
admin
asked
in
Electronic Devices
Nov 17, 2017
by
admin
32.7k
points
113
views
gate2017-ec-1
carrier-transport
numerical-answers
electronic-devices
0
votes
0
answers
16
GATE ECE 2017 Set 1 | Question: 47
A linear time invariant (LTI) system with the transfer function $G(s)=\frac{K(s^{2}+2s+2)}{(s_{2}-3s+2)}$ is connected in unity feedback configuration as shown in the figure. For the closed loop system shown, the root locus for $0< K < \infty$ ... $K>1.5$ $1<K<1.5$ $0<K<1$ no positive value of $K$
admin
asked
in
Control Systems
Nov 17, 2017
by
admin
32.7k
points
98
views
gate2017-ec-1
linear-time-invariant-systems
transfer-function
control-systems
bode-and-root-locus-plots
0
votes
0
answers
17
GATE ECE 2017 Set 1 | Question: 41
For the DC analysis of the Common-Emitter amplifier shown, neglect the base current and assume that the emitter and collector currents are equal. Given that $V_{T}=25mV,V_{BE}=0.7V$, and the BJT output resistance $r_{o}$ is practically infinite. Under these conditions, the midband voltage gain magnitude, $A_{v}=\mid v_{o}/v_{i} \mid $, V/V is ____________.
admin
asked
in
Analog Circuits
Nov 17, 2017
by
admin
32.7k
points
44
views
gate2017-ec-1
bjt-and-mosfet-amplifiers
numerical-answers
analog-circuits
0
votes
0
answers
18
GATE ECE 2017 Set 1 | Question: 41
For the circuit shown, assume that the NMOS transistor is in saturation. Its threshold voltage $V_{tn}=1V$ and its transconductance parameter $\mu_{n}C_{ox}\big(\frac{W}{L}\big)=1 \: mA/V^{2}$.Neglect channel length modulation and body bias effects. Under these conditions, the drain current $I_{D}$ in $mA$ is ________.
admin
asked
in
Analog Circuits
Nov 17, 2017
by
admin
32.7k
points
105
views
gate2017-ec-1
bjt-and-mosfet-amplifiers
numerical-answers
analog-circuits
0
votes
0
answers
19
GATE ECE 2017 Set 1 | Question: 39
In the figure shown, the $npn$ transistor acts as a switch. For the input $V_{in}(t)$ as shown in the figure, the transistor switches between the cut-off and saturation regions of operation, when $T$ is large. Assume collector-to-emitter ... $(\alpha)$ of the transistor for the switching should be __________.
admin
asked
in
Analog Circuits
Nov 17, 2017
by
admin
32.7k
points
53
views
gate2017-ec-1
bipolar-junction-transistor
numerical-answers
analog-circuits
0
votes
0
answers
20
GATE ECE 2017 Set 1 | Question: 38
As shown, two Silicon (Si) abrupt $p-n$ junction diodes are fabricated with uniform donor doping concentrations of $ N_{D1}=10^{14} cm^{-3} $ and $N_{D2}=10^{16}cm^{-3}$ in the $n$-regions of the diodes, and uniform acceptor ... in potentials of the diodes, the ratio $C_{2}/C_{1}$ of their reverse bias capacitance for the same applied reverse bias, is _________.
admin
asked
in
Electronic Devices
Nov 17, 2017
by
admin
32.7k
points
34
views
gate2017-ec-1
numerical-answers
p-n-junction
electronic-devices
0
votes
0
answers
21
GATE ECE 2017 Set 1 | Question: 42
The amplifier circuit shown in the figure is implemented using a compensated operational amplifier (op-amp), and has an open-loop voltage gain, $A_{0}=10^{5}V/V$ and an open-loop cut-off frequency, $f_{c}=8Hz$. The voltage gain of the amplifier at $15$ kHz, in V/V, is____________.
admin
asked
in
Analog Circuits
Nov 17, 2017
by
admin
32.7k
points
64
views
gate2017-ec-1
numerical-answers
analog-circuits
op-amps
0
votes
0
answers
22
GATE ECE 2017 Set 1 | Question: 28
Let $I=\int_{c}\left ( 2zdx+2ydy+2xdx \right )$ where $x,y,z$ are real, and let $C$ be the straight line segment from point $A:(0,2,1)$ to point $B:(4,1,-1)$.The value of $I$ is ____________.
admin
asked
in
Complex Analysis
Nov 17, 2017
by
admin
32.7k
points
103
views
gate2017-ec-1
complex-analysis
numerical-answers
0
votes
0
answers
23
GATE ECE 2017 Set 1 | Question: 29
Which one of the following is the general solution of the first order differential equation $\frac{dy}{dx}=(x+y-1)^{2},$ where $x,y$ are real? $y=1+x+\tan^{-1}(x+c)$, where $c$ is a constant $y=1+x+\tan(x+c)$, where $c$ is a constant $y=1-x+\tan^{-1}(x+c)$, where $c$ is a constant $y=1-x+\tan(x+c)$, where $c$ is a constant
admin
asked
in
Differential Equations
Nov 17, 2017
by
admin
32.7k
points
73
views
gate2017-ec-1
differential-equations
first-order-differential-equation
0
votes
0
answers
24
GATE ECE 2017 Set 1 | Question: 26
Let $f(x)=e^{x+x^{2}}$ for real $x$ . From among the following, choose the Taylor series approximation of $f(x)$ around $x=0$, which includes all powers of $x$ less than or equal to $3$. $1 + x + x^{2} + x^{3} $ $1 + x +\frac{3}{2} x^{2} + x^{3} $ $1 + x +\frac{3}{2} x^{2} + \frac{7}{6}x^{3} $ $1 + x +3 x^{2} + 7x^{3} $
admin
asked
in
Calculus
Nov 17, 2017
by
admin
32.7k
points
61
views
gate2017-ec-1
calculus
taylor-series
0
votes
0
answers
25
GATE ECE 2017 Set 1 | Question: 9
A bar of Gallium Arsenide (GaAs) is doped with silicon such that the silicon atoms occupy Gallium and Arsenic sites in the GaAs crystal. Which one of the following statements is true? Silicon atoms act as $p$-type dopants in Arsenic sites and ... Arsenic sites as well as Gallium sites Silicon atoms act as $n$-type dopants in Arsenic sites as well as Gallium sites
admin
asked
in
Electromagnetics
Nov 17, 2017
by
admin
32.7k
points
219
views
gate2017-ec-1
electromagnetics
0
votes
0
answers
26
GATE ECE 2017 Set 1 | Question: 31
Let $x(t)$ be a continuous time periodic signal with fundamental period $T=1$ seconds.Let ${a_{k} }$ be the complex Fourier series coefficients of $x(t)$, where $k$ is integer valued. Consider the following statements about $x(3t)$: The complex ... one of the following is correct? Only II and III are true Only I and III are true Only III is true Only I is true
admin
asked
in
Continuous-time Signals
Nov 17, 2017
by
admin
32.7k
points
77
views
gate2017-ec-1
fourier-transform
continuous-time-signals
signals-and-systems
0
votes
0
answers
27
GATE ECE 2017 Set 1 | Question: 33
Let $h[n]$ ... radians. Given that $H(\omega_{0})=0$ and $0< \omega_{0} < \pi$, the value of $\omega_{0}$ (in radians) is equal to__________.
admin
asked
in
Continuous-time Signals
Nov 17, 2017
by
admin
32.7k
points
65
views
gate2017-ec-1
numerical-answers
continuous-time-signals
linear-time-invariant-systems
fourier-transform
0
votes
0
answers
28
GATE ECE 2017 Set 1 | Question: 25
Consider a wireless communication link between a transmitter and a receiver located in free space, with finite and strictly positive capacity. If the effective areas of the transmitter and the receiver antennas, and the distance between them are all doubled, and ... factor of $2$ Decreases by a factor of $2$ Remains unchanged Decreases by a factor of $\sqrt{2}$
admin
asked
in
Electromagnetics
Nov 17, 2017
by
admin
32.7k
points
70
views
gate2017-ec-1
antennas
electromagnetics
0
votes
0
answers
29
GATE ECE 2017 Set 1 | Question: 34
The figure shows an RLC circuit excited by the sinusoidal voltage $100 \cos(3t)$ Volts, where $t$ is in seconds. The ratio $\frac{\text{amplitude of }V_{2}}{\text{amplitude of }V{1}}$ is______.
admin
asked
in
Network Solution Methods
Nov 17, 2017
by
admin
32.7k
points
99
views
gate2017-ec-1
numerical-answers
network-solution-methods
rlc-circuits
0
votes
0
answers
30
GATE ECE 2017 Set 1 | Question: 35
In the circuit shown, the voltage $V_{IN}(t)$ is described by: $V_{IN}(t)=\begin{cases} 0, & \text{for } t< 0 \\ 15 \text{Volts} & \text{for } t\geq 0 \end{cases}$ where $t$ is in seconds. The time (in seconds) at which the current $I$ in the circuit will reach the value $2$ Amperes is ___________.
admin
asked
in
Analog Circuits
Nov 17, 2017
by
admin
32.7k
points
73
views
gate2017-ec-1
numerical-answers
analog-circuits
0
votes
0
answers
31
GATE ECE 2017 Set 1 | Question: 20
Which of the following can be the pole-zero configuration of a phase-lag controller (lag compensator)?
admin
asked
in
Analog Circuits
Nov 17, 2017
by
admin
32.7k
points
162
views
gate2017-ec-1
mosfet
analog-circuits
0
votes
0
answers
32
GATE ECE 2017 Set 1 | Question: 32
Two discrete-time signals $x[n]$ and $h[n]$ are both non-zero only for $n=0,1,2$, and are zero otherwise .It is given that $x[0]=1, \: x[1]=2, \: x[2]=1, \: h[0]=1$ Let $y[n]$ be the linear convolution of $x[n]$ and $h[n]$. Given that $y[1]=3$ and $y[2]=4$, the value of the expression $(10y[3]+y[4])$ is__________.
admin
asked
in
Continuous-time Signals
Nov 17, 2017
by
admin
32.7k
points
90
views
gate2017-ec-1
numerical-answers
continuous-time-signals
discrete-time-signals
signals-and-systems
0
votes
0
answers
33
GATE ECE 2017 Set 1 | Question: 30
Starting with $x=1$, the solution of the equation $x^{3}+x=1$, after two iterations of Newton-Raphson’s method (up to two decimal places) is__________.
admin
asked
in
Numerical Methods
Nov 17, 2017
by
admin
32.7k
points
61
views
gate2017-ec-1
numerical-answers
numerical-methods
0
votes
0
answers
34
GATE ECE 2017 Set 1 | Question: 17
Consider the D-Latch shown in the figure, which is transparent when its clock input $CK$ is high and has zero propagation delay. In the figure , the clock signal $CLK$ has a $50 \%$ duty cycle and $CLK2$ is a one-fifth period delayed version of $CLK1$.The duty cycle at the output of the latch in percentage is _________.
admin
asked
in
Digital Circuits
Nov 17, 2017
by
admin
32.7k
points
126
views
gate2017-ec-1
digital-circuits
sequential-circuit
latch
0
votes
0
answers
35
GATE ECE 2017 Set 1 | Question: 15
In the latch circuit shown, the $NAND$ gates have non-zero, but unequal propagation delays. The present input condition is $P=Q=’0’$. If the input condition is changed simultaneously to $P=Q=’1’$, the outputs $X$ and $Y$ are, $X=’1’$, $Y=’1’$ either $X=’1’$, $Y=’0’$ or $X=’0’$, $Y=’1’$ either $X=’1’$, $Y=’1’$ or $X=’0’$, $Y=’0’$ $X=’0’$, $Y=’0’$
admin
asked
in
Digital Circuits
Nov 17, 2017
by
admin
32.7k
points
98
views
gate2017-ec-1
digital-circuits
sequential-circuit
latch
0
votes
0
answers
36
GATE ECE 2017 Set 1 | Question: 19
Consider a stable system with transfer function,$G(s)=\frac{s^{p}+b_{1}s^{p-1}+\dots +b_{p}}{s^{q}+a_{1}s^{q-1}+\dots +a_{q}}$, where $b_1, \dots ,b_p$ and $a_1, \dots ,a_q$ are real valued constants.The slope of the Bode log magnitude curve of $G(s)$ ... of values for $p$ and $q$ is $p=0$ and $q=3$ $p=1$ and $q=7$ $p=2$ and $q=3$ $p=3$ and $q=5$
admin
asked
in
Control Systems
Nov 17, 2017
by
admin
32.7k
points
86
views
gate2017-ec-1
bode-and-root-locus-plots
control-systems
0
votes
0
answers
37
GATE ECE 2017 Set 1 | Question: 18
The open loop transfer function $G(s)=\frac{(s+1)}{s^{p}(s+2)(s+3)}$ where $p$ is an integer, is connected in unity feedback configuration as shown in figure. Given that the steady state error is zero for unit step input and is $6$ for unit ramp input, the parameter $p$ is__________.
admin
asked
in
Control Systems
Nov 17, 2017
by
admin
32.7k
points
131
views
gate2017-ec-1
numerical-answers
control-systems
transfer-function
0
votes
0
answers
38
GATE ECE 2017 Set 1 | Question: 15
A good transconductance amplifier should have high input resistance and low output resistance low input resistance and high output resistance high input and output resistances low input and output resistances
admin
asked
in
Analog Circuits
Nov 17, 2017
by
admin
32.7k
points
90
views
gate2017-ec-1
analog-circuits
amplifier
0
votes
0
answers
39
GATE ECE 2017 Set 1 | Question: 22
Which one of the following statements about differential pulse code modulation (DPCM) is true? The sum of message signal sample with its prediction is quantized The message signal sample is directly quantized, and its prediction is not ... signal sample and a random signal is quantized The difference of message signal sample with its prediction is quantized
admin
asked
in
Communications
Nov 17, 2017
by
admin
32.7k
points
1.1k
views
gate2017-ec-1
digital-communications
differential-pulse-code-modulation
0
votes
0
answers
40
GATE ECE 2017 Set 1 | Question: 23
In a digital communication system, the overall pulse shape $p(t)$ at the receiver before the sampler has the Fourier transform $P(f)$. If the symbols are transmitted at the rate of $2000$ symbols per second, for which of the following cases is the inter symbol interference zero?
admin
asked
in
Communications
Nov 17, 2017
by
admin
32.7k
points
266
views
gate2017-ec-1
digital-communication
communications
Page:
1
2
next »
Welcome to GO Electronics, where you can ask questions and receive answers from other members of the community.