ECE 240 CSUN Simple and Direct Electrical Engineering Questions Homework Set 1 is a set of simple and direct electrical engineering questions.I will the at

ECE 240 CSUN Simple and Direct Electrical Engineering Questions Homework Set 1 is a set of simple and direct electrical engineering questions.I will the attach the homework set below.Thank you ECE 240
Electrical Engineering Fundamentals
Homework Set 1
Name (Print):
Homework policy:
This assignment is due by 11:59 p.m. on June 15, 2020. A penalty of 20 percent will be deducted
for a late submission. The last day to submit all assignments via Canvas is July 5, 2020 at 11:59
p.m. A zero will be assigned thereafter.
Concepts covered:
• Circuit Elements
• KVL/KCL and series/parallel circuits
• Nodal/mesh analysis
• Thevenin/Norton equivalent circuits, source transformation, superposition principle.
• Operational amplifiers
ECE 240
Homework Set 1 – Page 2 of 22
I R1
IT
Vs
+
10V
VR1 R1 = 1 kΩ
−
Question(s):
(a) Determine VR1 .
(b) Determine VR2 .
(c) Determine VR3 .
(d) Determine IR1 . Hint: Ohm’s law.
(e) Determine IR2 . Hint: Ohm’s law.
(f) Determine IR3 . Hint: Ohm’s law.
Due date: 6/15/20
I R2
+
VR2 R2 = 1 kΩ
−
I R3
+
VR3 R3 = 0.5 kΩ
−
ECE 240
Homework Set 1 – Page 3 of 22
t=0
i1
t=0
IS = 1A +
Vx
2Ω
−
Question(s):
(a) Determine Vx for t > 0. Hint: redraw the circuit for t > 0.
(b) Determine Vx for t < 0. Due date: 6/15/20 1Ω ECE 240 Homework Set 1 - Page 4 of 22 Due date: 6/15/20 t=0 t=0 t=0 +− + 2Ω Vx − 1V 1A Question(s): (a) Determine Vx for t > 0. Hint: redraw the circuit for t > 0.
(b) Determine Vy for t < 0. + 1Ω Vy − ECE 240 Homework Set 1 - Page 5 of 22 + V − R Va t=0 + − + + V − b Question(s): (a) Determine V for t < 0. Hint: is there a current through R for t < 0? (b) Determine V for t > 0.
(c) Determine the current following through R for t > 0.
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 6 of 22
Question(s):
Assume that R1 = 8Ω and R2 = 4Ω.
(a) Use Ohm’s law to determine current in R1 .
(b) Determine i using KCL.
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 7 of 22
Question(s):
(a) Determine va . Hint: Use voltage divider equation.
(b) Determine vb .
(c) Determine v.
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 8 of 22
Question(s):
(a) Determine R1 , which represents the equivalent resistance in (b).
(b) Determine R2 , which represents the equivalent resistance in (c).
Due date: 6/15/20
ECE 240
Question(s):
(a) Determine i.
Homework Set 1 – Page 9 of 22
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 10 of 22
Question(s):
(a) Set up the nodal analysis equations.
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 11 of 22
Question(s):
(a) Set up the nodal analysis equations.
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 12 of 22
Question(s):
(a) Set up the mesh analysis equations.
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 13 of 22
Question(s):
(a) Set up the mesh analysis equations.
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 14 of 22
Due date: 6/15/20
Question(s):
(a) Set up the mesh analysis equations.
(b) Solve the mesh equations to determine the mesh current associated with each mesh.
ECE 240
Homework Set 1 – Page 15 of 22
Due date: 6/15/20
R3
VS
+
−
C
R4
RL
R1
D
R2
Question(s):
(a) VOC is the open circuit voltage with RL removed. VOC is equal to VC − VD . Show that VOC
can be expressed as a function of R1 , R2 , R3 and R4 . Hint: use the voltage divider formula
to determine VC and VD .
(b) Let R4 = R1 = R − ∆R and R2 = R3 = R + ∆R. Show that VOC = − ∆R
R .
ECE 240
Homework Set 1 – Page 16 of 22
Due date: 6/15/20
R3
VS
+
−
C
R4
RL
R1
D
R2
Question(s):
(a) Show that the Thevenin resistance is equal to R4 ||R2 + R3 ||R1 .
(b) Let R4 = R1 = R − ∆R and R3 = R2 = R + ∆R. Show that the Thevenin resistance is R if
R >> ∆R.
ECE 240
Homework Set 1 – Page 17 of 22
Due date: 6/15/20
Question(s):
(a) Simplify the circuit using source transformation to a single-loop circuit so that one KVL
equation can be rewritten to find ia . Start by creating the Thevenin equivalent circuit of the
8 Ω resistor and 2 A current source.
ECE 240
Homework Set 1 – Page 18 of 22
Question(s):
(a) Show that vo = av1 + bv2 + ci3 .
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 19 of 22
Question(s):
(a) Determine vo as a function of v1 and v2 .
Due date: 6/15/20
ECE 240
Question(s):
(a) Determine va and vo .
Homework Set 1 – Page 20 of 22
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 21 of 22
Question(s):
(a) Determine the voltage at a.
(b) Determine the voltage at the inverting terminal.
(c) Determine the voltage at b.
(d) Determine vo
Due date: 6/15/20
ECE 240
Homework Set 1 – Page 22 of 22
Question(s):
(a) Determine the voltage at the non-inverting terminal.
(b) Determine vo .
Due date: 6/15/20

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