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1. Find the equivalent resistance of the circuit shown in Fig.

(ANNA UNIV MAY-UN! "#1$%(&eg "#1'%

". e)ne &M* voltage. (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%'. +hat is reci,rocit theore.(ANNA UNIV MAY-UN! "#1$% (&eg

"#1'%$. +h do ou short circuit the voltage source and o,en the

current sources when ou )nd /hevenis0s voltage of a

Networ. (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%2. e)ne qualit factor in the resonant circuit. (ANNA UNIV MAY-

 UN! "#1$% (&eg "#1'%3. eterine the qualit factor of a coil for the series resonant

circuit consisting of &41#oh564#.175and 841#icrofard. 

(ANNA UNIV MAY-UN! "#1$% (&eg "#1'%9. istinguish :etween natural and forced res,onse. (ANNA UNIV

MAY-UN! "#1$% (&eg "#1'%;. +hat is the tie constant for &6 and &8 circuit< (ANNA UNIV

MAY-UN! "#1$% (&eg "#1'%=. +rite the e>ect of ,ower factor in energ consu,tion :illing. 

(ANNA UNIV MAY-UN! "#1$% (&eg "#1'%1#. istinguish :etween un:alanced source and un:alanced

load. (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

11.(a% (i% Find the current I and Voltage across '#? of the circuit

shown in Fig.11(a% (i%(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

 (ii%eterine5the current in all resistors of the circuit shown in

Fig.11(a% (ii%(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

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 (:% (i% eterine the current through each resistor in the circuit

shown in Fig.11(:% (i%(3% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

(ii% +hen a @8 voltage is a,,lied to a ca,acitor5 voltage across its

terinals is found to :uild u, in accordance with Vc42#(1-e-

1##t%.After #.#1* the current ow is equal to "A. (ANNA UNIV MAY-

 UN! "#1$% (&eg "#1'%

(1%Find the value of ca,acitance in farad. (ANNA UNIV MAY-UN!

"#1$% (&eg "#1'%

("%7ow uch energ stored in the electric )eld<(1#% (ANNA UNIV

MAY-UN! "#1$% (&eg "#1'%

1" (a% (i% eterine the current in the 2? resistor in the networ

shown in Fig.1"(a% (i%(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

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(ii% Find out the current in each :ranch of the circuit shown in Fig.1"

(a% (ii%(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'% 

(:% (i% eterine current in each esh of the circuit shown in

Fig.1"(:% (i% (;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

(ii%eterine the in each esh of the circuit shown in Fig.1"(:% (ii%(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

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1' (a% For the circuit shown Fig.1'(a% 5 deterine the i,edance at

resonant frequenc51#7B a:ove the resonant frequenc5 and 1#7B

:elow resonant frequenc (13% (ANNA UNIV MAY-UN! "#1$% (&eg

"#1'%

(:%!C,lain that how to derive D factor of ,arallel resonance(13% 

(ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

1$(a% A series &6 circuit with &4'#? and l4 127 has a constant

voltage V43#v a,,lied at t4# as shown in Fig.1$(a%. eterine the

current I5 the voltage across resistor and the voltage across the

inductor.(13% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

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(:% /he circuit shown in Fig.1$(:% consists of resistance5 inductance

and ca,acitance in series with 1##V 8 when the switch is closed at

t4#. Find the current transient.(13% (ANNA UNIV MAY-UN! "#1$%

(&eg "#1'%

12(a%(i% A setrical three- ,haseE three wire $$# V su,,l to a

star connected load. /he i,edance in each :ranch are

@&4"G'?5@ Y 41-G"?5 @H4'G$?.Find its equivalent delta connected

load(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

(ii% A three ,hase5 :alance delta connected load of$G;? is

connected across a $$oV5' :alanced su,,l. eterine the ,hase

currents and line currents.(Jhase sequence is &YH%(;% (ANNA UNIV

MAY-UN! "#1$% (&eg "#1'%

(:%(i% A setrical three-,hase three $$#V5su,,l is connected to

a delta-connected load. I,edances in each :ranch are @&Y 41#∟30º 

?5 @ YH41#∟45º ? and @H&4".2∟60º ?.Find its equivalent star K

connected load(;%. (ANNA UNIV MAY-UN! "#1$% (&eg "#1'% 

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(ii%A :alanced star connected load having an i,edances

12G"#?,er ,hase is connected to '5$$#V 2#7B.Find the line

current and ,ower a:sor:ed : the load.(;% (ANNA UNIV MAY-UN!

"#1$% (&eg "#1'%

Unit 1

1. Find the equivalent resistance of the circuit shown in Fig.

(ANNA UNIV MAY-UN! "#1$%(&eg "#1'%". e)ne &M* voltage. (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

11.(a% (i% Find the current I and Voltage across '#? of the circuit

shown in Fig.11(a% (i%(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

 (ii%eterine5the current in all resistors of the circuit shown in

Fig.11(a% (ii%(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

 (:% (i% eterine the current through each resistor in the circuit

shown in Fig.11(:% (i%(3% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

(ii% +hen a @8 voltage is a,,lied to a ca,acitor5 voltage across its

terinals is found to :uild u, in accordance with Vc42#(1-e-

1##t%.After #.#1* the current ow is equal to "A. (ANNA UNIV MAY-

 UN! "#1$% (&eg "#1'%

(1%Find the value of ca,acitance in farad. (ANNA UNIV MAY-UN!

"#1$% (&eg "#1'%

("%7ow uch energ stored in the electric )eld<(1#% (ANNA UNIVMAY-UN! "#1$% (&eg "#1'%

Unit "

1. +hat is reci,rocit theore.(ANNA UNIV MAY-UN! "#1$% (&eg

"#1'%

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1$(a% A series &6 circuit with &4'#? and l4 127 has a constant

voltage V43#v a,,lied at t4# as shown in Fig.1$(a%. eterine the

current I5 the voltage across resistor and the voltage across the

inductor.(13% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

(:% /he circuit shown in Fig.1$(:% consists of resistance5 inductanceand ca,acitance in series with 1##V 8 when the switch is closed at

t4#. Find the current transient.(13% (ANNA UNIV MAY-UN! "#1$%

(&eg "#1'%

Unit 2

1. +rite the e>ect of ,ower factor in energ consu,tion :illing. 

(ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

". istinguish :etween un:alanced source and un:alanced load. (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

12(a%(i% A setrical three- ,haseE three wire $$# V su,,l to a

star connected load. /he i,edance in each :ranch are

@&4"G'?5@ Y 41-G"?5 @H4'G$?.Find its equivalent delta connected

load(;% (ANNA UNIV MAY-UN! "#1$% (&eg "#1'%

(ii% A three ,hase5 :alance delta connected load of$G;? is

connected across a $$oV5' :alanced su,,l. eterine the ,hase

currents and line currents.(Jhase sequence is &YH%(;% (ANNA UNIV

MAY-UN! "#1$% (&eg "#1'%

(:%(i% A setrical three-,hase three $$#V5su,,l is connected to

a delta-connected load. I,edances in each :ranch are @&Y 41#∟30º 

?5 @ YH41#∟45º ? and @H&4".2∟60º ?.Find its equivalent star K

connected load(;%. (ANNA UNIV MAY-UN! "#1$% (&eg "#1'% 

(ii%A :alanced star connected load having an i,edances

12G"#?,er ,hase is connected to '5$$#V 2#7B.Find the line

current and ,ower a:sor:ed : the load.(;% (ANNA UNIV MAY-UN!

"#1$% (&eg "#1'%