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Unformatted text preview: Name: SOLUTION S cwnu e—mail: CASE WESTERN RESERVE UNIVERSITY
Case School of Engineering
Department of Electrical Engineering and Computer Science
ENGR 210. Introduction to Circuits and Instruments (4) Quiz No. 4 9/26/08
Problem 1 (10 points) / ,_ . ~ ~  . ‘ SQPQFno&L
‘ x
+
V0
(a) (1 point) How many nodes are there in the above circuit. # Nodes: 5 (b) (6 points) Using the Node Voltage Method write the equations for V1, V2 and V3 in standard form.
PLEASE WRITE ALL COEFFICIENTS IN DECIMAL — NO FRACTIONS! V1 + V2 + V3 =
V1 + V2 + V3 =
V1 + V2 + V3 :
(c ) (3 points) Determine V1 V2 and V3. VHLL‘s sourced; :—q§;ah0'n 4—6 _%VL‘V3 :0 Q) V3: L0
It): “9L 9N, Name : W110 N S CWRU email: Problem 2 (10 points) 12V 4V 2kg (a) (1 point) How many meshes are there in the above circuit. # Meshes: Z (b) (6 points) Using the Mesh Current Method write the equations for I1 and I2 in standard form.
PLEASE WRITE ALL COEFFICIENTS IN DECIMAL  NO FRACTIONS! I1 + I2 =
I1 + I2 =
(c) (2 points) Determine I1 and I2. I1: 4.6(0 m A
I2: ~ 3. 3.3 m A .
(d) What is the power associated with the 4V source? P4V Smm: +2000 :12, I'Zi—ZoooJZ‘ +ZoooIL=O
7.000 1.2— 10003:, — 4  100011: 0 Name : 5010“ OM 5 cwnu email: CASE WESTERN RESERVE UNIVERSITY
Case School of Engineering
Department of Electrical Engineering and Computer Science
ENGR 210. Introduction to Circuits and Instruments (4) Quiz No. 4 9/26/08
Problem 1 (10 points) / '_ __ __ 5UW¢DM
‘ K
/ "x
l
10kg i V]
+
V S nod“) (a) (1 point) How many nodes are there in the above circuit. # Nodes: 5 (b) (6 points) Using the Node Voltage Method write the equations for V1, V2 and V3 in standard form.
PLEASE WRITE ALL COEFFICIENTS IN DECIMAL  NO FRACTIONS! _____‘_‘_‘__V1+__'11____V2+___l__V3=__O_____
'1 V1 + l V2+ v3: '1.
v1+ ' V2+ ‘ 9 V3: 0
(c) (3 points) Determine V1, V2 and V3. V1: " 5 . 45
(”‘VI VI 0 I V2: V3 0 .1 (OEV' V2=_+_éii+_
_. " X “' : 2
M. rota l0\’~ X roe v3: 1‘ '1 0C1
V1_V\ : '1
+ VL—V3 " 32:9” 2: O
IOK 2K
W
$V V‘ ~ (D‘V! _ Vz~v3 =0
IOL IOL ion ion
co—v _ v _ c+v_v +V3=
I V! V l 2" —\/l —\)2 +V3 = O
1" I’ \Z “9 \)\ +VL = ‘2. V2*V3 5V3 ’ V7. 40%: w wavemam: Name : Problem 2 (10 points) +
21:9 V0
(a) (1 point) How many meshes are there in the above Circuit. # Meshes: 2 (b) (6 points) Using the Mesh Current Method write the equations for I1 and I2 in standard form.
PLEASE WRITE ALL COEFFICIENTS IN DECIMAL — NO FRACTIONS! £53200 I1+ 2.000 I2: I2.
“1000 1+ “4000 I2: 4 (c) (2 points) Determine l1 and I2. I1: ﬂblomA I2:  3. 33 MA .
(d) What is the power associated with the 4V source? P4V source= " ‘3' 32 mW
+ ZoooI, — [2410001‘4— 2000 751:0
—2.o<oo IZ—zooo I — 4— 2000 I2, =0 4V
4000; —I 7.000 :2: I2. ——(' 4‘)"—
—2.oooIl —4ooo I; 1 4— 6...,—
I2
1‘ :. 4.(o(omA .
.1 «YA. = + 4 ‘3I33mA
IZ=—3>.33mA I’ + < X >
~ \3,33miq (garter aII'na ) W
(3000)“:000) = 1000
m 1’ b 060 H _;, _ $OURO= WAMSFoKmﬁ‘noMs f :1 ViviWW
;_,1__7f3r&3¥fx¢é_lom.m.,nﬂwork4;m%_$pmmms Eor_mro.,2uegn.r;_‘ .j .5. 1 i ...
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