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Electric Circuits
Three Phase Circuits
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Transient Response
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Graph Theory
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Two Port Networks
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Sinusoidal Steady State Analysis
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Network Elements
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Network Theorems
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1
GATE EE 2025
MCQ (Single Correct Answer)
+2
-0.67

The transformer connection given in the figure is part of a balanced 3-phase circuit where the phase sequence is "abc". The primary to secondary turns ratio is $2: 1$. If ( $I_a+I_b+I_c=0$ ), then the relationship between $l_A$ and $l_{\text {ad }}$ will be

GATE EE 2025 Electric Circuits - Three Phase Circuits Question 3 English
A
$\frac{\left|I_A\right|}{\left|I_{a d}\right|}=\frac{1}{2 \sqrt{3}}$ and $I_{a d}$ lags $I_A$ by $30^{\circ}$
B
$\frac{\left|I_A\right|}{\left|I_{a d}\right|}=\frac{1}{2 \sqrt{3}}$ and $I_{a d}$ leads $I_A$ by $30^{\circ}$
C
$\frac{\left|I_A\right|}{\left|I_{a d}\right|}=2 \sqrt{3}$ and $I_{a d}$ lags $I_A$ by $30^{\circ}$
D
$\frac{\left|I_A\right|}{\left|I_{a d}\right|}=2 \sqrt{3}$ and $I_{a d}$ leads $I_A$ by $30^{\circ}$
2
GATE EE 2025
Numerical
+2
-0
In an experiment to measure the active power drawn by a single-phase RL Load connected to an AC source through a $2 \Omega$ resistor, three voltmeters are connected as shown in the figure below. The voltmeter readings are as follows : $\mathrm{V}_{\text {source }}=200 \mathrm{~V}$, $V_R=9 \mathrm{~V}, V_{\text {Load }}=199 \mathrm{~V}$. Assuming perfect resistors and ideal voltmeters, the Load-active power measured in this experiment, in $W$, is ___________ . GATE EE 2025 Electric Circuits - Three Phase Circuits Question 2 English
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3
GATE EE 2025
Numerical
+2
-0
Using shunt capacitors, the power factor of a 3-phase, 4 kV induction motor (drawing 390 kVA at 0.77 pf lag) is to be improved to 0.85 pf lag. The line current of the capacitor bank, in $A$, is _________ (Round off to one decimal places)
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4
GATE EE 2024
MCQ (More than One Correct Answer)
+2
-0

For a two-phase network, the phase voltages $V_p$ and $V_q$ are to be expressed in terms of sequence voltages $V_\alpha$ and $V_\beta$ as $\begin{bmatrix} V_p \\ V_q \end{bmatrix} = S \begin{bmatrix} V_\alpha \\ V_\beta \end{bmatrix}$. The possible option(s) for matrix $S$ is/are

A

$\begin{bmatrix} 1 & 1 \\ 1 & -1 \end{bmatrix}$

B

$\begin{bmatrix} 1 & 1 \\ 1 & 1 \end{bmatrix}$

C

$\begin{bmatrix} 1 & 1 \\ 1 & 0 \end{bmatrix}$

D

$\begin{bmatrix} -1 & 1 \\ 1 & 1 \end{bmatrix}$

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Questions Asked from Marks 2
GATE EE 2025 (3) GATE EE 2024 (2) GATE EE 2023 (2) GATE EE 2017 Set 2 (1) GATE EE 2007 (1) GATE EE 2006 (1) GATE EE 2003 (1) GATE EE 1994 (1) GATE EE 1992 (1)
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement