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Hot questions in Electrical Circuits
0
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0
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1
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
2
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
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
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
5
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
6
GATE2014329
The Norton’s equivalent source in amperes as seen into the terminals $X$ and $Y$ is _______.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee3
thevenins
theorem
nortonstheorem
numericalanswers
0
votes
0
answers
7
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
8
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
9
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
10
GATE2015147
In the given circuit, the parameter $k$ is positive, and the power dissipated in the $2 \Omega$ resistor is $12.5$W. The value of $k$ is _________.
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2015ee1
dependentsources
nodalanalysis
numericalanswers
0
votes
0
answers
11
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
12
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
13
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
14
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
15
GATE201418
A combination of $1\:μF$ capacitor with an initial voltage $V_{c}(0)=2\:V$ in series with a $100\:Ω$ resistor is connected to a $20\:mA$ ideal $dc$ current source by operating both switches at $t=0s$ as shown. Which of the following graphs shown in the options approximates the voltage $V_s$ across the current source over the next few seconds?
asked
Feb 12, 2017
in
Electrical Circuits
by
makhdoom ghaya
(
9.3k
points)
gate2014ee1
capacitance
switch
0
votes
0
answers
16
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
17
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
18
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
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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