Network Theorems · Electric Circuits · GATE EE
Marks 1
1
All the elements in the circuit are ideal. The power delivered by the 10 V source in watts is
GATE EE 2024
2
For the circuit shown in the figure, $$V_1=8$$ V, DC and $$I_1=8$$ A, DC. The voltage $$V_{ab}$$ in Volts is __________ (Round off to 1 decimal place).
GATE EE 2023
3
In the given circuit, for maximum power to be delivered to RL, its value should be ______ Ω. (Round off to 2 decimal places.)
GATE EE 2021
4
The Thevenin equivalent voltage, Vth, in V (rounded off to 2 decimal places) of the network shown below, is ________
GATE EE 2020
5
For the given circuit the Thevenin equivalent is to be determined. The Thevenin voltage,
VTh (in volt), seen from terminal AB is _________.
GATE EE 2015 Set 1
6
A non-ideal voltage source VS has an internal impedance of ZS. If a purely resistive load is to
be chosen that maximizes the power transferred to the load, its value must be
GATE EE 2014 Set 3
7
A source $$v_s\left(t\right)=V\cos100\mathrm{πt}$$ has an internal impedance of (4 + j3) Ω.If a purely
resistive load connected to this source has to extract the maximum power out of
the source, its value in Ω should be
GATE EE 2013
8
The impedance looking into nodes 1 and 2 in the given circuit is
GATE EE 2012
9
In the circuit shown below, the current through the inductor is
GATE EE 2012
10
In the circuit given below, the value of R required for the transfer of maximum
power to the load having a resistance of 3 Ω is
GATE EE 2011
11
In the figure the current source is $$1\,\,\angle \,0\,A,$$ $$R = \,1\,\,\Omega ,$$ the impedances are $${Z_C} = - j\,\,\Omega ,$$ and $${Z_L} = 2\,j\,\,\Omega .$$ The Thevenin equivalent looking into the circuit across $$X-Y$$ is.
GATE EE 2006
12
In the Fig. $${Z_1} = 10\angle - {60^ \circ },\,\,{Z_2} = 10\angle {60^ \circ },\,$$ $${Z_3} = 50\angle {53.13^ \circ }.\,\,$$ Thevenin's impedance seen from $$X-Y$$ is
GATE EE 2003
13
Superposition principle is not applicable to a network containing time-varying registors.
GATE EE 1994
Marks 2
1
For the circuit shown, if $$i = \sin 1000t$$, the instantaneous value of the Thevenin's equivalent voltage (in Volts) across the terminals a-b at time t = 5 ms is __________ (Round off to 2 decimal places).
GATE EE 2023
2
For the network shown, the equivalent Thevenin voltage and Thevenin impedance as seen across terminals 'ab' is
GATE EE 2021
3
A benchtop dc power supply acts as an ideal 4 A current source as long as its terminal voltage is below 10 V. Beyond this point, it begins to behave as an ideal 10 V voltage source for all load currents going down to 0 A. When connected to an ideal rheostat, find the load resistance value at which maximum power is transferred, and the corresponding load voltage and current.
GATE EE 2020
4
The current I flowing in the circuit shown below in Amperes is ________.
GATE EE 2019
5
For the network given in figure below, the Thevenin's voltage Vab is
GATE EE 2017 Set 2
6
In the circuit shown below, the maximum power transferred to the resistor R is _______ W.
GATE EE 2017 Set 1
7
In the circuit shown below, the node voltage VA is _________ V.
GATE EE 2016 Set 1
8
The Norton’s equivalent source in amperes as seen into the terminals X and Y is _______.
GATE EE 2014 Set 3
9
In the circuit shown below, if the source voltage $$V_s=100\angle53.12^\circ\;V$$ then the Thevenin’s equivalent
voltage in Volts as seen by the load resistance RL is
GATE EE 2013
10
Assuming both the voltage sources are in phase, the value of R for which maximum power is
transferred from circuit A to circuit B is
GATE EE 2012
11
If $$V_A-V_B=\;6\;V$$, then $$V_C-V_D$$ is
GATE EE 2012
12
For the circuit given above, the Thevenin's voltage across the terminals $$A$$ and $$B$$ is
GATE EE 2009
13
For the circuit given above, the Thevenin's resistance across the terminals $$A$$ and $$B$$ is
GATE EE 2009
14
In the given Fig. the Thevenin's equivalent pair (voltage, impedence), as seen at the terminals $$P-Q$$, is given by
GATE EE 2005
15
In Fig. the potential difference between points $$P$$ and $$Q$$ is
GATE EE 2003
16
Two ac sources feed a common variable resistive load as shown in Fig. Under the maximum power transfer condition, the power absorbed by the load resistance $${R_L}$$ is
GATE EE 2003
17
Viewed from the terminals $$A, B$$ the following circuit shown in Figure can be reduced to an equivalent circuit of a single voltage source in series with a single resistor with the following parameters:
GATE EE 1998
18
For the circuit shown in Fig, the Norton equivalent source current value is _________ $$A$$ and its resistance is ___________ $$Ohms$$
GATE EE 1997
Marks 5
1
An electrical network is fed by two $$ac$$ sources, as shown in Fig. Given that
$${Z_1} = \left( {1 - j} \right)\Omega ,\,\,{Z_2} = \left( {1 + j} \right)\Omega $$ and $${Z_L} = \left( {1 + j0} \right)\Omega .$$ Obtain the Thevenin equivalent circuit (Thevenin voltage and impedance) across terminals $$X$$ and $$Y$$, and determine the current $${{\rm I}_L}$$ through the load $${Z_L}.$$
$${Z_1} = \left( {1 - j} \right)\Omega ,\,\,{Z_2} = \left( {1 + j} \right)\Omega $$ and $${Z_L} = \left( {1 + j0} \right)\Omega .$$ Obtain the Thevenin equivalent circuit (Thevenin voltage and impedance) across terminals $$X$$ and $$Y$$, and determine the current $${{\rm I}_L}$$ through the load $${Z_L}.$$
GATE EE 2002
2
Predict the current $${\rm I}$$ in Fig. in response to a voltage of $$20\angle {0^0}\,V.$$ The impedance values are given in $$ohms.$$ Use Thevenin's theorem.
GATE EE 2000
3
Find the Thevenin equivalent about $$AB$$ for the circuit shown in Figure.
GATE EE 1997