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Hot questions in Analog and Digital Electronics
0
votes
0
answers
1
GATE2015-2-32
For the switching converter shown in the following figure, assume steady-state 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)
gate2015-ee-2
steady-state-operation
reverse-current
numerical-answers
0
votes
0
answers
2
GATE2015-1-40
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)
gate2015-ee-1
analog-to-digital-converter
register
0
votes
0
answers
3
GATE2014-3-49
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)
gate2014-ee-3
multi-vibrator
edge-triggered
0
votes
0
answers
4
GATE2014-3-52
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)
gate2014-ee-3
trigger-level
oscillator
numerical-answers
0
votes
0
answers
5
GATE2015-2-13
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)
gate2015-ee-2
not-gate
sum-op-products
0
votes
0
answers
6
GATE2015-2-31
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 ripple-free. 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)
gate2015-ee-2
step-down-converter
ripple-voltages
numerical-answers
0
votes
0
answers
7
GATE2015-1-14
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)
gate2015-ee-1
silicon-transistor
active-mode
numerical-answers
0
votes
0
answers
8
GATE2013-14
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)
gate2013-ee
tube
diode
electronics
0
votes
0
answers
9
GATE2013-18
A band-limited 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)
gate2013-ee
band-width
sampling-theorem
0
votes
0
answers
10
GATE2014-3-22
An operational-amplifier 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)
gate2014-ee-3
operational-amplifier
feed-back-resistor
0
votes
0
answers
11
GATE2014-3-50
The transfer characteristic of the Op-amp circuit shown in figure is
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2014-ee-3
transfer-characteristics
operational-amplifier
0
votes
0
answers
12
GATE2014-2-21
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)
gate2014-ee-2
binary-code
counter
0
votes
0
answers
13
GATE2015-2-12
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)
gate2015-ee-2
amplifying-transister
commom-emitter
numerical-answers
0
votes
0
answers
14
GATE2015-2-14
The filters $F1$ and $F2$ having characteristics as shown in Figures $(a)$ and $(b)$ are connected as shown in Figure $(c)$. The cut-off 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 Band-pass filter Band-stop filter All pass filter High-Q filter
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015-ee-2
operational-amplifier
voltage-divider
0
votes
0
answers
15
GATE2014-3-48
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)
gate2014-ee-3
bridge-circuit
source
numerical-answers
0
votes
0
answers
16
GATE2014-2-35
A $10$ $kHz$ even-symmetric 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)
gate2014-ee-2
band-limiting-circuit
filters
0
votes
0
answers
17
GATE2015-1-33
The single-phase full-bridge 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 steady-state is ________.
asked
Feb 12, 2017
in
Analog and Digital Electronics
by
makhdoom ghaya
(
9.2k
points)
gate2015-ee-1
modulation-index
pulse-width-modulation
numerical-answers
0
votes
0
answers
18
GATE2014-3-23
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)
gate2014-ee-3
binary-code
processing
0
votes
0
answers
19
GATE2014-2-29
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)
gate2014-ee-2
clipper-circuits
diodes
0
votes
0
answers
20
GATE2015-1-38
$f(A, B, C, D)$ = $\pi M(0,1,3,4,5,7,9,11,12,13,14,15)$ 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)
gate2015-ee-1
logic-gates
boolean-algebra
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