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Hot questions in Analog and Digital Electronics
0
votes
0
answers
1
GATE2015232
For the switching converter shown in the following figure, assume steadystate operation. Also assume that the components are ideal, the inductor current is always positive and continuous and switching period is $T_{s}$. If the voltage $V_{L}$ is as shown, the duty cycle of the switch $S$ is ________.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee2
steadystateoperation
reversecurrent
numericalanswers
0
votes
0
answers
2
GATE2015140
An $8$bit, unipolar Successive Approximation Register type ADC is used to convert $3.5$ V to digital equivalent output. The reference voltage is $+5$ V. The output of the ADC, at the end of 3rd clock pulse after the start of conversion, is 1010 0000 1000 0000 0000 0001 0000 0011
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee1
analogtodigitalconverter
register
0
votes
0
answers
3
GATE2014349
Two monoshot multivibrators, one positive edge triggered ($M_1$) and another negative edge triggered ($M_2$), are connected as shown in figure The monoshots $M_1$ and $M_2$ when triggered produce pulses of width $T_1$ and $T_2$ respectively, where $T_1$>$T_2$. The steady state output voltage $v_0$ of the circuit is
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee3
multivibrator
edgetriggered
0
votes
0
answers
4
GATE2014352
A hysteresis type $TTL$ inverter is used to realize an oscillator in the circuit shown in the figure. If the lower and upper trigger level voltages are $0.9$ $V$ and $1.7$ $V$, the period (in $ms$), for which output is $LOW$, is __________.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee3
triggerlevel
oscillator
numericalanswers
0
votes
0
answers
5
GATE2015213
Consider the following Sum of Products expression, $F$. $F= ABC + \bar{A}\bar{B}C + A\bar{B}C + \bar{A}BC + \bar{A}\bar{B}\bar{C}$ The equivalent Product of Sums expression is $F= (A+\bar{B}+C) (\bar{A}+B+C) (\bar{A}+\bar{B}+C)$ $F= (A+\bar{B}+\bar{C}) (A+B+C) (\bar{A}+\bar{B}+\bar{C})$ $F= (\bar{A}+B+\bar{C}) (A+\bar{B}+\bar{C}) (A+B+C)$ $F= (\bar{A}+\bar{B}+C) (A+B+\bar{C}) (A+B+C)$
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee2
notgate
sumopproducts
0
votes
0
answers
6
GATE2015231
A buck converter feeding a variable resistive load is shown in the figure. The switching frequency of the switch $S$ is $100$ kHz and the duty ratio is $0.6$. The output voltage $V_{0}$ is $36$ V. Assume that all the components are ideal, and that the output voltage is ripplefree. The value of $R$ (in Ohm) that will make the inductor current ($i_{L}$) just continuous is _________.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee2
stepdownconverter
ripplevoltages
numericalanswers
0
votes
0
answers
7
GATE2015114
In the given circuit, the silicon transistor has $\beta = 75$ and a collector voltage $V_{C} = 9V$. Then the ratio of $R_{B}$ and $R_{C}$ is _________.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee1
silicontransistor
activemode
numericalanswers
0
votes
0
answers
8
GATE201314
The input impedance of the permanent magnet moving coil $(PMMC)$ voltmeter is infinite. Assuming that the diode shown in the figure below is ideal, the reading of the voltmeter in Volts is $4.46$ $3.15$ $2.23$ $0$
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
piyag476
(
1.5k
points)
gate2013ee
tube
diode
electronics
0
votes
0
answers
9
GATE201318
A bandlimited signal with a maximum frequency of $5\:kHz$ is to be sampled. According to the sampling theorem, the sampling frequency in $kHz$ which is not valid is $5$ $12$ $15$ $20$
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
piyag476
(
1.5k
points)
gate2013ee
bandwidth
samplingtheorem
0
votes
0
answers
10
GATE2014322
An operationalamplifier circuit is shown in the figure. $(\frac{R_2}{R_1})v_i$ $(1+\frac{R_2}{R_1})v_i$ $(1+\frac{R_2}{R_1})v_i$ +$V_{sat}$ or $V_{sat}$
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee3
operationalamplifier
feedbackresistor
0
votes
0
answers
11
GATE2014350
The transfer characteristic of the Opamp circuit shown in figure is
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee3
transfercharacteristics
operationalamplifier
0
votes
0
answers
12
GATE2014221
Which of the following is an invalid state in an $8$$4$$2$$1$ Binary Coded Decimal counter $1$ $0$ $0$ $0$ $1$ $0$ $0$ $1$ $0$ $0$ $1$ $1$ $1$ $1$ $0$ $0$
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee2
binarycode
counter
0
votes
0
answers
13
GATE2015212
In the following circuit, the transistor is in active mode and $V_{C} = 2 V$. To get $V_{C} = 4 V$, we replace $R_{C}$ with $R′_{C}$. Then the ratio $R'_{C}$/ $R_{C}$ is _________.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee2
amplifyingtransister
commomemitter
numericalanswers
0
votes
0
answers
14
GATE2015214
The filters $F1$ and $F2$ having characteristics as shown in Figures $(a)$ and $(b)$ are connected as shown in Figure $(c)$. The cutoff frequencies of $F1$ and $F2$ are $f_{1}$ and $f_{2}$ respectively. If $f_{1} < f_{2}$, the resultant circuit exhibits the characteristic of a Bandpass filter Bandstop filter All pass filter HighQ filter
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee2
operationalamplifier
voltagedivider
0
votes
0
answers
15
GATE2014348
In the bridge circuit shown, the capacitors are loss free. At balance, the value of capacitance $C_1$ in microfarad is _________.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee3
bridgecircuit
source
numericalanswers
0
votes
0
answers
16
GATE2014235
A $10$ $kHz$ evensymmetric square wave is passed through a bandpass filter with centre frequency at $30$ $kHz$ and $3$ $dB$ passband of $6$ $kHz$. The filter output is a highly attenuated square wave at $10$ $kHz$. nearly zero. a nearly perfect cosine wave at $30$ $kHz$ a nearly perfect sine wave at $30$ $kHz$.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee2
bandlimitingcircuit
filters
0
votes
0
answers
17
GATE2015133
The singlephase fullbridge voltage source inverter (VSI), shown in figure, has an output frequency of $50$ Hz. It uses unipolar pulse width modulation with switching frequency of $50$ kHz and modulation index of $0.7$ ... $R = 5 \Omega$, the amplitude of the fundamental component in the output voltage $V_{o}$ (in Volt) under steadystate is ________.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee1
modulationindex
pulsewidthmodulation
numericalanswers
0
votes
0
answers
18
GATE2014323
In $8085A$ microprocessor, the operation performed by the instruction $LHLD$ $2100_H$ is $(H)\leftarrow 21_H$ , $(L)\leftarrow 00_H$ $(H)\leftarrow M(2100_H)$ , $(L)\leftarrow M(2101_H)$ $(H)\leftarrow M(2101_H)$ , $(L)\leftarrow M(2100_H)$ $(L)\leftarrow 00_H$ , $(H)\leftarrow 21_H$
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee3
binarycode
processing
0
votes
0
answers
19
GATE2014229
Assuming the diodes to be ideal in the figure, for the output to be clipped, the input voltage $v_i$ must be outside the range $1$ $V$ to $2$ $V$ $2$ $V$ to $4$ $V$ $+1$ $V$ to $2$ $V$ $+2$ $V$ to $4$ $V$
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014ee2
clippercircuits
diodes
0
votes
0
answers
20
GATE2015138
$f(A, B, C, D)$ = $\pi M(0,1,3,4,5,7,9,11,12,13,14,15)$ is a maxterm representation of a Boolean function $f (A, B, C, D)$ where $A$ is the $MSB$ and $D$ is the $LSB$. The equivalent minimized representation of this function is $(A +\bar{C}+D) (\bar{A}+B+D)$ ... $(B+\bar{C}+D) (A+\bar{B}+\bar{C}+D) (\bar{A}+B+C+D)$
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015ee1
logicgates
booleanalgebra
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