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0
votes
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1
GATE201338
In the circuit shown below, $Q_1$ has negligible collectortoemitter saturation voltage and the diode drops negligible voltage across it under forward bias. If $V_{cc}$ is +$5$ $V$, $X$ and $Y$ are digital signals with $0$ $V$ as logic $0$ and $V_{cc}$ as logic $1$, then the Boolean expression for $Z$ is $XY$ $\overline{X}Y$ $X\overline{Y}$ $\overline{XY}$
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
piyag476
(
1.5k
points)
gate2013ee
bjt
commonemitter
biasing
0
votes
0
answers
2
GATE201332
The separately excited $dc$ motor in the figure below has a rated armature current of $20$ $A$ and a rated armature voltage of $150$ $V$. An ideal chopper switching at $5$ $kHz$ is used to control the armature voltage. If $L_a$= $0.1$ $mH$, $R_a$= $1$ $\Omega$, ... the chopper to obtain $50$% of the rated torque at the rated speed and the rated field current is $0.4$ $0.5$ $0.6$ $0.7$
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
piyag476
(
1.5k
points)
gate2013ee
motors
drives
0
votes
0
answers
3
GATE2014252
In an $8085$ microprocessor, the following program is executed Address location – Instruction 2000H XRA A 2001H MVI B,04H 2003H MVI A, 03H 2005H RAR 2006H DCR B 2007H JNZ 2005 200AH HLT At the end of program, register A contains $60H$ $30H$ $06H$ $03H$
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee2
registers
programming
0
votes
0
answers
4
GATE2014253
A fully controlled converter bridge feeds a highly inductive load with ripple free load current. The input supply ($V_s$) to the bridge is a sinusoidal source. Triggering angle of the bridge converter is $\alpha =30^0$. The input power factor of the bridge is __________.
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee2
powerfactor
converters
0
votes
0
answers
5
GATE2014254
A singlephase $SCR$ based $ac$ regulator is feeding power to a load consisting of $5$ $Ω$ resistance and $16$ $mH$ inductance. The input supply is $230$ $V$, $50$ $Hz$ ac. The maximum firing angle at which the voltage across the device becomes zero all throughout and the rms value of current through ... $30^0$ and $46$ $A$ $30^0$ and $23$ $A$ $45^0$ and $23$ $A$ $45^0$ and $32$ $A$
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee2
thyristor
firingangle
0
votes
0
answers
6
GATE2014255
The SCR in the circuit shown has a latching current of $40$ $mA$. $A$ gate pulse of $50$ $μs$ is applied to the $SCR$. The maximum value of $R$ in $Ω$ to ensure successful firing of the $SCR$ is _________.
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee2
latchingcircuit
firingangle
0
votes
0
answers
7
GATE2014153
The figure shows the circuit diagram of a rectifier. The load consists of a resistance $10$ $Ω$ and an inductance $0.05$ $H$ connected in series. Assuming ideal thyristor and ideal diode, the thyristor firing angle (in degree) needed to obtain an average load voltage of $70$ $V$ is ______
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee1
rectifier
thyristor
firing
angle
0
votes
0
answers
8
GATE2014154
Figure $(i)$ shows the circuit diagram of a chopper. The switch $S$ in the circuit in figure $(i)$ is switched such that the voltage $v_D$ across the diode has the wave shape as shown in figure $(ii)$. The capacitance $C$ is large so that the voltage across it is constant. If switch $S$ and the diode are ideal, the peak to peak ripple (in $A$) in the inductor current is ______
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee1
choppers
ripplevoltages
0
votes
0
answers
9
GATE2014150
Which of the following logic circuits is a realization of the function F whose Karnaugh map is shown in figure
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee1
karnaugh
map
logicgates
0
votes
0
answers
10
GATE2014122
In the Wien Bridge oscillator circuit shown in figure, the bridge is balanced when $\frac{R_3}{R_4}=\frac{R_1}{R_2}$ $\omega =\frac{1}{\sqrt{R_1C_1R_2C_2}}$ $\frac{R_2}{R_1}=\frac{C_2}{C_1}$ $\omega =\frac{1}{R_1C_1R_2C_2}$ ... $\omega =\frac{1}{\sqrt{R_1C_1R_2C_2}}$ $\frac{R_3}{R_4}+\frac{R_1}{R_2}=\frac{C_2}{C_1}$ $\omega =\frac{1}{R_1C_1R_2C_2}$
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee1
wien
bridge
oscillator
0
votes
0
answers
11
GATE2014123
The magnitude of the midband voltage gain of the circuit shown in figure is (assuming $h_{fe}$ of the transistor to be 100) $1$ $10$ $20$ $100$
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee1
voltagegain
midbandvotage
0
votes
0
answers
12
GATE2014125
Figure shows four electronic switches $(i)$, $(ii)$, $(iii)$ and $(iv)$. Which of the switches can block voltages of either polarity (applied between terminals $a$ and $b$) when the active device is in the $OFF$ state? $(i)$, $(ii)$ and $(iii)$ $(ii)$, $(iii)$ and $(iv)$ $(ii)$ and $(iii)$ $(i)$ and $(iv)$
asked
Feb 12, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2014ee1
dualityswitch
reversesaturationcurrent
0
votes
0
answers
13
GATE2016219
A threephase diode bridge rectifier is feeding a constant $DC$ current of $100 A$ to a highly inductive load. If threephase, $415 V, 50 Hz AC$ source is supplying to this bridge rectifier then the rms value of the current in each diode, in ampere, is ___________.
asked
Jan 30, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2016ee2
linecurrent
waveform
triplenharmonics
magnetizationinductance
0
votes
0
answers
14
GATE2016220
A buckboost $DCDC$ converter, shown in the figure below, is used to convert $24 V$ battery voltage to $36 V DC$ voltage to feed a load of $72 W$. It is operated at $20 kHz$ with an inductor of $2 mH$ and output capacitor of $1000 \mu F$. All devices are considered to be ideal. The peak voltage across the solidstate switch $(S)$, in volt, is _______.
asked
Jan 30, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2016ee2
dutycycle
highfrequencyswitch
bidirectionalswitch
reversediode
0
votes
0
answers
15
GATE201622
The circuit shown below is an example of a Low pass filter. Band pass filter. High pass filter. Notch filter.
asked
Jan 30, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2016ee2
electric
filter
electriccircuit
0
votes
0
answers
16
GATE2016122
A buck converter, as shown in Figure (a) below, is working in steady state. The output voltage and the inductor current can be assumed to be ripple free. Figure (b) shows the inductor voltage $v_{L}$ during a complete switching interval. Assuming all devices are ideal, the duty cycle of the buck converter is ___________.
asked
Jan 30, 2017
in
Electrical and Electronic Measurements
by
makhdoom ghaya
(
9.2k
points)
gate2016ee1
voltagelevelshift
continuousconductionmode
boundaryconditions
reversecurrent
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