điện tử va máy tính lê chí thông 2013 11 07 intro to ece midterm sinhvienzone com

INTRO TO ELECTRICAL AND COMPUTER ENGINEERING ECE110 MIDTERM EXAMINATION Semester 1 2013-2014 Duration: 60 min Department of Electronics Engineering Lecturer Dr.. Le Chi Thong INSTRUCT

INTRO TO ELECTRICAL AND COMPUTER ENGINEERING (ECE110)

MIDTERM EXAMINATION Semester 1 (2013-2014)

Duration: 60 min

Department of Electronics Engineering Lecturer

Dr Le Chi Thong

INSTRUCTIONS:

 Answer on this question sheet

 Lectures, class notes, books, laptops, iPads, … are NOT accepted

 Arithmetic-only calculators are accepted

 Show all your work, e.g., your solution process, the equation(s) that you use, the values of the

variables used the equation(s), …

 Include the unit of measurement in each answer

 Do NOT communicate with any other students

Student ID Number

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Problem 1 (2 points)

a) Find the IV equation of the following circuit

b) Give the IV equation of the circuit C1: = 0.5𝑉 − 8 Find I0, V 0 after connecting

c) If the circuit C1 in question b is replaced by the circuit in question a, find I 0 , V 0

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Problem 2 (2.5 points) Use the following circuit for this problem

a Find the current I1, I2, I3 and I4

b Find the power of V1 and V2 in SRS, and determine that V1 and V2 is a source or a load

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Problem 3 (2.5 points)

a Use the following diagram for this question Calculate VAve , I Ave , V RMS , I RMS, P Ave

b If 𝑉(𝑡) = −𝑅 𝐼(𝑡), prove or disprove that 𝑃𝐴𝑣𝑒 = −𝑉𝑅𝑀𝑆× 𝐼𝑅𝑀𝑆

8

4

2

V [V]

t [ms]

2

4

-2

8

4

2

I [A]

t [ms]

2

4

-2

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Problem 4 (2 points) Find V3, V4, V5 in the following circuit

Problem 5 (1 point) Find the equivalent resistance between node A and B in the following circuit Show

your work clearly

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