Most viewed questions in Electric Circuits / GO Electrical

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41

GATE Electrical 2014 Set 1 | Question: 8
A combination of $1\:\mu F$ capacitor with an initial voltage $V_{c}(0)=-2\:V$ in series with a $100\:\Omega$ 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?

A combination of $1\:\mu F$ capacitor with an initial voltage $V_{c}(0)=-2\:V$ in series with a $100\:\Omega$ resistor is connected to a $20\:mA$ ideal $dc$ current sourc...

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42

GATE Electrical 2016 Set 1 | Question: 55
In the circuit shown below, the node voltage $V_{A}$ is ___________ $V$.

In the circuit shown below, the node voltage $V_{A}$ is ___________ $V$.

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43

GATE Electrical 2014 Set 1 | Question: 29
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 _______

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\tim...

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44

GATE Electrical 2016 Set 2 | Question: 37
In the circuit shown below, the initial capacitor voltage is $4 V$. Switch $S_{1}$ is closed at $t=0$. The charge (in $\mu C$) lost by the capacitor from $t=25 \mu s$ to $t=100 \mu s$ is _________.

In the circuit shown below, the initial capacitor voltage is $4 V$. Switch $S_{1}$ is closed at $t=0$. The charge (in $\mu C$) lost by the capacitor from $t=25 \mu s$ to ...

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45

GATE Electrical 2016 Set 2 | Question: 23
In the circuit shown below, the voltage and current sources are ideal. The voltage $(V_{out})$ across the current source, in volts, is $0$ $5$ $10$ $20$

In the circuit shown below, the voltage and current sources are ideal. The voltage $(V_{out})$ across the current source, in volts, is$0$ $5$$10$ $20$

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46

GATE Electrical 2016 Set 2 | Question: 16
A parallel plate capacitor filled with two dielectrics is shown in the figure below. If the electric field in the region $A$ is $4 kV/cm$, the electric field in the region $B$, in $kV/cm$, is $1$ $2$ $4$ $16$

A parallel plate capacitor filled with two dielectrics is shown in the figure below. If the electric field in the region $A$ is $4 kV/cm$, the electric field in the regio...

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47

GATE Electrical 2015 Set 1 | Question: 31
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 $0.2 ms$ ... inductor current and negligible ripple on the capacitor voltage, the output voltage $V_{0}$ (in Volt) across $R_{L}$ is _______.

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 i...

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48

GATE Electrical 2014 Set 1 | Question: 30
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 ________

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 ________

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49

GATE Electrical 2016 Set 2 | Question: 24
The graph associated with an electrical network has $7$ branches and $5$ nodes. The number of independent $KCL$ equations and the number of independent $KVL$ equations, respectively, are $2$ and $5$ $5$ and $2$ $3$ and $4$ $4$ and $3$

The graph associated with an electrical network has $7$ branches and $5$ nodes. The number of independent $KCL$ equations and the number of independent $KVL$ equations, r...

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50

GATE Electrical 2014 Set 2 | Question: 30
The voltage across the capacitor, as shown in the figure, is expressed as $V_c(t)=A_1\sin(\omega _1t-\theta _1)+A_2 \sin(\omega _2t-\theta _2)$ 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 $6.40$

The voltage across the capacitor, as shown in the figure, is expressed as$V_c(t)=A_1\sin(\omega _1t-\theta _1)+A_2 \sin(\omega _2t-\theta _2)$The values of $A_1 $and $A_2...

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51

GATE Electrical 2016 Set 1 | Question: 15
$R_{A}$ and $R_{B}$ are the input resistances of circuits as shown below. The circuits extend infinitely in the direction shown. Which one of the following statements is TRUE? $R_{A}=R_{B}$ $R_{A}=R_{B}=0$ $R_{A}< R_{B}$ $R_{B}= R_{A} /(1+R_{A})$

$R_{A}$ and $R_{B}$ are the input resistances of circuits as shown below. The circuits extend infinitely in the direction shown. Which one of the following statements is ...

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52

GATE Electrical 2015 Set 1 | Question: 45
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 ________.

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...

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53

GATE Electrical 2015 Set 1 | Question: 20
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

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

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54

GATE Electrical 2016 Set 1 | Question: 45
The voltage $(v_{s})$ across and the current $(i_{s})$ through a semiconductor switch during a turn-ON transition are shown in figure. The energy dissipated during the turn-ON transition, in $mJ$, is _______.

The voltage $(v_{s})$ across and the current $(i_{s})$ through a semiconductor switch during a turn-ON transition are shown in figure. The energy dissipated during the tu...

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55

GATE Electrical 2015 Set 1 | Question: 5
When the Wheatstone bridge shown in the figure is used to find the value of resistor $R_{X}$, the galvanometer $G$ indicates zero current when $R_{1}=50\Omega, R_{2}=65\Omega$ and $R_{3}=100\Omega$. If $R_{3}$ is known with $ \pm 5 \%$ tolerance on its nominal ... $R_{X}$ in Ohms? $[123.50, 136.50]$ $[125.89, 134.12]$ $[117.00, 143.00]$ $[120.25, 139.75]$

When the Wheatstone bridge shown in the figure is used to find the value of resistor $R_{X}$, the galvanometer $G$ indicates zero current when $R_{1}=50\Omega, R_{2}=65\O...

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56

GATE Electrical 2016 Set 1 | Question: 39
In the circuit shown, switch $S_{2}$ has been closed for a long time. At time $t=0$ switch $S_{1}$ is closed. At $t=0^{+}$, the rate of change of current through the inductor, in amperes per second, is _____.

In the circuit shown, switch $S_{2}$ has been closed for a long time. At time $t=0$ switch $S_{1}$ is closed. At $t=0^{+}$, the rate of change of current through the indu...

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57

GATE Electrical 2016 Set 1 | Question: 44
The switches $T1$ and $T2$ in Figure (a) are switched in a complementary fashion with sinusoidal pulse width modulation technique. The modulating voltage $v_{m}(t)=0.8\sin (200\pi t) V$ and the triangular carrier voltage $(v_{c})$ are as shown in ... $5 kHz$. The peak value of the $100 Hz$ component of the load current $(i_{L})$, in ampere, is ________ .

The switches $T1$ and $T2$ in Figure (a) are switched in a complementary fashion with sinusoidal pulse width modulation technique. The modulating voltage $v_{m}(t)=0.8\si...

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58

GATE Electrical 2016 Set 1 | Question: 17
In the portion of a circuit shown, if the heat generated in $5 \Omega$ resistance is $10$ calories per second, then heat generated by the $4 \Omega$ resistance, in calories per second, is ________.

In the portion of a circuit shown, if the heat generated in $5 \Omega$ resistance is $10$ calories per second, then heat generated by the $4 \Omega$ resistance, in calori...

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59

GATE Electrical 2015 Set 1 | Question: 18
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? $5$ $7$ $10$ $14$

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...

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60

GATE Electrical 2016 Set 2 | Question: 27
For the circuit shown below, taking the opamp as ideal, the output voltage $V_{out}$ in terms of the input voltages $V_{1}, V_{2}$ and $V_{3}$ is $1.8V_{1} + 7.2V_{2} -V_{3}$ $2V_{1} + 8V_{2} - 9V_{3}$ $7.2V_{1} + 1.8V_{2} -V_{3}$ $8V_{1} + 2V_{2} - 9V_{3}$

For the circuit shown below, taking the opamp as ideal, the output voltage $V_{out}$ in terms of the input voltages $V_{1}, V_{2}$ and $V_{3}$ is$1.8V_{1} + 7.2V_{2} -V_{...

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makhdoom ghaya asked Jan 29, 2017