guia cinco del blog
DESCRIPTION
desarrollo de la guia del blogTRANSCRIPT
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EJERCICIOS DE MALLAS
Para resolver los ejercicios debemos tener en cuenta lo siguiente.
1. Identificar el concepto.2. Plantear el problema3. Resolver el problema por el sistema de ecuaciones.
EJERCICIO 1.
10i – 6 +8i +12 = 0
18i + 6 = 0
i = -6/18
i = -1/3
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EJERCICIO 2.
2 + 4 ( i1 – i2 ) + 2 i1 = 0
2 + 4 i1 – 4 i2 + 2 i1 = 0
6 i 1 – 4 i 2 = - 2
-6 + 1i2 + 4 ( i2 – i1 ) = 0
- 6 + 1i2 + 4i2 – 4i1 = 0
– 4i 1 + 5 i 2 = 6
6 – 4Δ= -4 5 = 30 – [(-4) (-4)] Δ = 14 = 30 – 16 =14
-4 - 2Δi1 = 5 6 = -24 – (-10) = - 24 + 10 = -14 Δi1 = -14
6 -2Δi2 = -4 6 = 36 – 8 = 28 Δi2 = 28
i1 = Δi1 / Δ = -14/14 i 1 = 1 i2 = Δ i2 / Δ = 28 / 14 = 2 i 2 = 2
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EJERCICIO 3.
-6 + 14i1 + 10 ( i1 – i2 ) = 0-6 + 14i1 + 10i1 – 10i2 = 024i 1 – 10i 2 = 6
5 + 10 ( i2 – i1 ) + 10i2 = 05 + 10i2 – 10i1 + 10i2 = 0-10i 1 + 20i 2 = -5
24 -10Δ = -10 20 = 480 – 100 = 380
6 -10Δi1 = -5 20 = 120 – 50 = 70
24 6Δi2 = -10 -5 = -120 + 60 = -60
i1 = Δi1 / Δ = 70/380 = i 1 = 0,18 A
i2 = Δi2 / Δ = -60/380 = i 2 = 0,15 A
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EJERCICIOS DE NODOS
EJERCICIO 1.
-5 + VA / 2 + VA–VB / 2 = 0 -10 + V A + V A - V B = 0 2 V A – V B = 10
2
VB–VA / 2 + VB / 2 + VB-VC / 2 = 0 V B –V A + V B + V B –V C = 0
2
–V A + 3V B = - 4
2 -1Δ = -1 3 = 6 – 1 = 5
-1 10ΔVA = 3 – 4 = 4 – 30 = - 26
2 10ΔVB = -1 – 4 = - 8 + 10 = 2
VA = ΔVA / Δ = -26 / 5 = -5,2
VB = ΔVB / Δ = 2 / 5 = 0,4
VC = - 4
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EJERCICIO 2.
V A = 12
V C = 12
VB – VA / 4 + VB / 6 + VB – VC / 3 = VB – 12 / 4 + VB / 6 + VB – 12 / 3 =
3V B - 36 + 2V B + 4V B - 48 = - 84 + 9 VB /12 = 12
9VB = 84
VB = 84 / 9
V B = 9,3
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EJERCICIO 3.
-3,1+ VA/ 2 + VA-VB/5 = 0 -31 + 5V A + 2V A - 2V B = 7V A - 2V B = 31 10
VB- VA/5 + VB/1 + (-1,4)/ 1= V B - V A + 5V B – 7 = -V A + 6V B = 7 5 7 -2Δ = -1 6 = 42- 2 = 40
31 -2ΔVA = 7 6 = 186 + 14 = 172
7 31ΔVB = -1 7 = 49 +31 = 80
ΔVA = ΔVA / Δ = 172/40= 4,3
ΔVB = ΔVB/ Δ = 80/40 =2
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EJERCICIOS DE SUPERMALLAS
EJERCICIO 1
i 2 – i 1 = 1
12 + 4i2 + 3i1 = 0 3i 1 + 4i 2 = -12
-1 1 Δ = 3 4 = -4 -3= -7
1 1Δi1 = 12 4 = 4 -12 =8
- 1 1Δi2 = 3 12 = -12 – 3 = -15
i1= Δi1/ Δ = 8/-7 = 1,1
i2 = Δi2/ Δ = -15/-7 = 2,1
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EJERCICIO 2
i 1 – i 2 = 2
8i1+ 2i2 + 3(i2-i3) + 2(i1-i3)=0 8i1+2i2+3i2-3i3+2i1-2i3=0 10i 1 +5i 2 -5i 3 =0
2i3-2i1+3i3-3i2-1 = 0 -2i 1 – 3i 2 + 5i 3 = 1
1 -1 0 10 5 -5Δ= -2 -3 5 = 1(25-15) – (-1) (50-10) + 0(-30+10) 1(10) + 1(40) + 0 = 50
2 -1 0 0 5 -5
Δi1= 1 -3 5 = 2 (25-15) – (-1) (0+5) + 0 20 + 5 + 0 = 25
1 2 0 10 0 -5Δi2= - 2 1 5 =1 ( 0 + 5) -2 (50-10) + 0 5 - 80= -75
1 -1 2 10 5 0Δi3= -2 -3 1 =1 (5 +0) – (-1) (10 +0) + 2 (-30 + 10) 5 +10 – 40 = - 25
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i1 = Δi1/ Δ = 25 / 50 = 2
i2 = Δi2 / Δ = -75 / 50 = - 1,5
i3 = Δi3 / Δ = -25 / 50 = 0,5
EJERCICIO 3
i 2 – i 1 = 5
-100 + 3(i1-i3) + 2 (i2-i3) + 50 + 4i2 + 6i1 = 0- 100 + 3i1 - 3i3 + 2i2 – 2i3 + 50 + 4i2 + 6i1 = 09i + 6i – 5i = 100 – 509i 1 + 6i 2 – 5i 3 = 50
10i3 + 2(i3-i2) + 3(i3-i1) = 010i3 + 2i3 – 2i2 + 3i3 – 3i1 = 0-3i 1 – 2i 2 + 15i 3 = 0
-1 1 0 9 6 -5Δ= -3 -2 15 = -1(90-10) – 1 (135-15) + 0 -80 – 120 = - 200
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5 1 0 50 6 -5Δi1= 0 -2 15 = 5(90 -10) – 1 (750 + 0) + 0 =400 -750 = -350
-1 5 0 9 50 -5Δi2= -3 0 15 = -1 (750 + 0) -5(135 -5) + 0 -750 - 600 =1350
-1 1 59 6 50
Δi3= -3 -2 0 = -1 (0 - 100) -1 (0+150) + 5(-18+18)= = -100 -150 +5 = -245
i1 = Δi1/ Δ = -350/-200 = 1,75
i2 = Δi2/ Δ = -1350/-200 = 6,75
i3 = Δi3/ Δ= -245/ -200 = 1,25
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EJERCICIOS DE SUPERNODOS
EJERCICIO 1
V B – V A = 5
-4 + V A + V A – V B +V B – V A + V B – 9 = 0 2V A + 3V A – 3V B +3V B – 3V A + 6V B -13 1/2 1/3 1/3 1/6 1 1 1 1 1 1
=2V A + 6V B = 13
1 -1Δ= 2 6 =6 + 2 = 8
5 -1Δi1= 13 6 = 30 + 13 = 43
1 5Δi2= 2 13 = 13 – 10 = 3
V A = 43/ 8 = 5,3
V B = 3 / 8 = 0,3
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EJERCICIO 2
V C – V B = 10
10 + V A – V B = 0 V A – V B = -40 4
V B – V A + 0 – V B + 0 – V C = 0 15V B – 15V A + 0 – 20V B + 0 - 12V C = 4 3 5 60
-15V A – 5V B – 12V C
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EJERCICIO 3
V B – V C = 22
8 + V A – V B + V A – V C = 0 96+ 4V A - 4V B + 3V A – 3V C = 3 4 12
7V A – 4V B – 3V C = -96
V B – V A + V B + V C + V C – V A - 25 = 3 1 5 4
20V B – 20V A + 60V B + 12V C + 15V C – 15V A = -30V A + 80V B + 27V C = 1500 60