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Hot questions in Electrical Circuits
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1
GATE2014130
In the figure, the value of resistor $R$ is $(25 + I/2)\: \text{ohms},$ where $I$ is the current in amperes. The current $I$ is ________
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee1
loopanalysis
dcsupply
numericalanswers
0
votes
0
answers
2
GATE2014129
An incandescent lamp is marked $40\:W, 240\: V$. If resistance at room temperature $(26^{\circ}C)$ is $120\:\Omega$, and temperature coefficient of resistance is $4.5\times 10^{3} / ^{\circ}C$, then its $ON$ state filament temperature in $^{\circ}C$ is approximately _______
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee1
incandescent
lamp
filament
numericalanswers
0
votes
0
answers
3
GATE2015230
The coils of a wattmeter have resistances $0.01 \Omega$ and $1000 \Omega$; their inductances may be neglected. The wattmeter is connected as shown in the figure, to measure the power consumed by a load, which draws $25 A$ at power factor $0.8$. The voltage across the load terminals is $30 V$. The percentage error on the wattmeter reading is ________.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee2
powermeasurement
coils
powerfactor
numericalanswers
0
votes
0
answers
4
GATE201517
Of the four characteristics given below, which are the major requirements for an instrumentation amplifier? P. High common mode rejection ratio Q. High input impedance R. High linearity S. High output impedance P, Q and R only P and R only P, Q and S only Q, R and S only
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
amplifier
bjts
0
votes
0
answers
5
GATE2014231
The total power dissipated in the circuit, shown in the figure, is $1$ $kW$. The voltmeter, across the load, reads $200$ $V$. The value of $X_L$ is ___________.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee2
powerloss
reactance
numericalanswers
0
votes
0
answers
6
GATE2014211
Assuming an ideal transformer, the Thevenin’s equivalent voltage and impedance as seen from the terminals $x$ and $y$ for the circuit in figure are $2$ $sin(wt)$ , $4Ω$ $1$ $sin(wt)$ , $1Ω$ $1$ $sin(wt)$ , $2Ω$ $1$ $sin(wt)$ , $0.5Ω$
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee2
thevinincircuit
idealtransformer
0
votes
0
answers
7
GATE201516
A $(050 A)$ moving coil ammeter has a voltage drop of $0.1 V$ across its terminals at full scale deflection. The external shunt resistance (in milliohms) needed to extend its range to $(0 – 500 A)$ is _______.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
currentmeasurement
ammeter
numericalanswers
0
votes
0
answers
8
GATE2014347
A periodic waveform observed across a load is represented by $V(t)=\begin{cases} 1+sin\omega t & 0\leq \omega t< 6\pi \\ 1+sin\omega t & 6\pi \leq \omega t< 12\pi \end{cases}$ The measured value, using moving iron voltmeter connected across the load, is $\sqrt{\frac{3}{2}}$ $\sqrt{\frac{2}{3}}$ $\frac{3}{2}$ $\frac{2}{3}$
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee3
waveforms
periodicfunctions
0
votes
0
answers
9
GATE2014219
The sawtooth voltage waveform shown in the figure is fed to a moving iron voltmeter. Its reading would be close to _____________
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee2
waveforms
voltmeter
numericalanswers
0
votes
0
answers
10
GATE2015119
For the given circuit, the Thevenin equivalent is to be determined. The Thevenin voltage, $V_{Th}$ (in Volt), seen from terminal $AB$ is __________.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
theveninvoltage
dependentsources
numericalanswers
0
votes
0
answers
11
GATE2015131
The circuit shown is meant to supply a resistive load $R_{L}$ from two separate $DC$ voltage sources. The switches $S1$ and $S2$ are controlled so that only one of them is $ON$ at any instant. $S1$ is turned on for $0.2 ms$ and $S2$ is ... conduction of the inductor current and negligible ripple on the capacitor voltage, the output voltage $V_{0}$ (in Volt) across $R_{L}$ is _______.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
ripplevoltages
timeperiod
numericalanswers
0
votes
0
answers
12
GATE2015145
The circuit shown in the figure has two sources connected in series. The instantaneous voltage of the $AC$ source (in Volt) is given by $v(t) = 12 \sin t$. If the circuit is in steady state, then the rms value of the current (in Ampere) flowing in the circuit is ________.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
seriesconnection
steady
state
numericalanswers
0
votes
0
answers
13
GATE2015130
An unbalanced $DC$ Wheatstone bridge is shown in the figure. At what value of $P$ will the magnitude of $V_{0}$ be maximum? $\sqrt{(1+x)}$ $(1+x)$ $1/\sqrt{(1+x)}$ $\sqrt{(1x)}$
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
wheatstonebridge
voltagedivider
0
votes
0
answers
14
GATE201527
A capacitive voltage divider is used to measure the bus voltage $V_{bus}$ in a highvoltage $50$ Hz AC system as shown in the figure. The measurement capacitors $C_{1}$ and $C_{2}$ have tolerances of $\pm 10$% on their nominal capacitance values. If the bus ... $V_{bus}$ is $100$ kV rms, the maximum rms output voltage $V_{out}$ (in kV), considering the capacitor tolerances, is _______.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee2
capacitivevoltagedivider
tolerance
numericalanswers
0
votes
0
answers
15
GATE2015118
The voltages developed across the $3 \Omega$ and $2 \Omega$ resistors shown in the figure are $6 V$ and $2 V$ respectively, with the polarity as marked. What is the power (in Watt) delivered by the $5 V$ voltage source? $5$ $7$ $10$ $14$
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
voltagesource
polarity
0
votes
0
answers
16
GATE20131
In the circuit shown below what is the output voltage $(V_{out})$ in $Volts$ if a silicon transistor $Q$ and an ideal opamp are used? $15$ $0.7$ $0.7$ $15$
asked
Feb 12, 2017
in
Electrical Circuits
by
piyag476
(
1.5k
points)
gate2013ee
operationalamplifier
transistor
ground
0
votes
0
answers
17
GATE2015218
A series $RL$ circuit is excited at $t = 0$ by closing a switch as shown in the figure. Assuming zero initial conditions, the value of $\frac{d^{2}i}{dt^{2}}$ at $t=0^{+}$ is $\frac{V}{L}$ $\frac{V}{R}$ $0$ $\frac{RV}{L^{2}}$
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee2
switching
rlcircuit
zeroinitialcondition
0
votes
0
answers
18
GATE2014230
The voltage across the capacitor, as shown in the figure, is expressed as $V_c(t)=A_1sin(\omega _1t\Theta _1)+A_2sin(\omega _2t\Theta _2)$ The values of $A_1 $and $A_2$ respectively, are $2.0$ and $1.98$ $2.0$ and $4.20$ $2.5$ and $3.50$ $5.0$ and $6.40$
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee2
sinusoidalvoltagesource
0
votes
0
answers
19
GATE2015219
The current $i$ (in Ampere) in the $2 \Omega$ resistor of the given network is ________.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee2
electriccircuitreduction
nodalanalysis
numericalanswers
0
votes
0
answers
20
GATE2015120
An inductor is connected in parallel with a capacitor as shown in the figure. As the frequency of current $i$ is increased, the impedance $(Z)$ of the network varies as
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
currentstoringelements
voltagestoringelements
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