University of Toronto Faculty of Applied Science and Engineering Department of Mechanical and Industrial Engineering Midterm Exam – October 22, 2014 MIE 342 – Circuits with Applications to Mechanical Engineering Systems Examiner: Sinisa Colic (This exam paper has 11 pages including this cover page) NAME: __________________________________ STUDENT NO:____________________________ Instructions to Candidate: GRADE: Duration: 110 minutes Type A exam 1. _____/30 No aid materials permitted 2. _____/10 Calculators are permitted 3. _____/20 Maximum mid-term mark is 30% of final grade 4. _____/15 Answer questions in space provided 5. _____/15 Show steps leading to final answers 6. _____/10 TOTAL:

DEPARTMENT OF MECHANICAL AND INDUSTRIAL ...exams.skule.ca/exams/MIE342H1_20149_621445803748solution...Department of Mechanical and Industrial Engineering Midterm Exam – October 22,

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University of Toronto

Faculty of Applied Science and Engineering

Department of Mechanical and Industrial Engineering

Midterm Exam – October 22, 2014

MIE 342 – Circuits with Applications to Mechanical Engineering Systems

Examiner: Sinisa Colic

(This exam paper has 11 pages including this cover page)

NAME: __________________________________

STUDENT NO:____________________________

Instructions to Candidate: GRADE: Duration: 110 minutes

Type A exam 1. _____/30

No aid materials permitted 2. _____/10

Calculators are permitted 3. _____/20

Maximum mid-term mark is 30% of final grade 4. _____/15

Answer questions in space provided 5. _____/15

Show steps leading to final answers 6. _____/10

TOTAL:
Page 2-11

Q1. Single Choice Problems (30 points). Clearly circle the correct answer.

(1-1) Find the current i in the following circuit. (5 marks)

(1) 11.4mA (2) 10mA (3) 2.5mA (4) 45.7mA

(1-2) Determine the smallest value of Rf in order to saturate the Op-Amp. (5 points)

(1) 500 Ω (2) 250 Ω (3) 650 Ω (4) 5k Ω
Page 3-11

(1-3) Circle the option that represents the Thévenin equivalent of the circuit shown below. (5 points)

(1) A (2) B (3) C (4) D
Page 4-11

(1-4) Determine the equivalent inductance Leq as seen between points a and b. (5 points)

(1) 2.9uH (2) 5uH (3) 1.7uH (4) 3.4uH

(1-5) Find the voltage across the capacitor at t = 40ms given that the initial voltage across the capacitor

is 0V. (5 points)

(1) -2V (2) 4V (3) 400V (4) 2V
Page 5-11

(1-6) Shown below is the plot of the voltage response v(t) of a parallel RLC network. Circle the option

that best describes this response. (5 points)

(1) Overdamped (2) Forced (3) Underdamped (4) Critically Forced

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