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University of Barishal

Department of Computer Science and Engineering

Final Exam

Course Title: Introduction to Electrical Engineering (EEE-1205)

Semester: 2nd | Session: 17-18

Time: 180 minutes | Marks: 60.00

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(Answer any FIVE questions)

1.

a)

State and explain Kirchhoff's point law and mesh law.

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3.50 Marks
b)

State and explain independent and dependent source.

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3.50 Marks
c)

Determine the currents in the unbalanced bridge circuit of fig. below. Also determine the p.d across BD and the resistance from B to D.

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5 Marks
2.

a)

State and explain Superposition theorem.

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4 Marks
b)

Calculate the power dissipated in the 9-W resistor of fig, below by applying the superposition principle. The voltage and current source should be treated as ideal sources. All resistance are in ohms.

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4 Marks
c)

Find the currents in all resistors by superposition theorem in the circuit shown in below. Calculate the power consumed.

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4 Marks
3.

a)

State and explain Thevenin Theorem.

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3 Marks
b)

Write down the procedure how to thevenize a given circuit.

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4 Marks
c)

Calculate the value of Vth of Rth between the open terminals A and B of the circuit shown below. All resistance are in ohms.

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5 Marks
4.

a)

State and explain compensation theorem.

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4 Marks
b)

State and explain Norton's theorem.

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4 Marks
c)

How to Nortonize a given circuit.

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4 Marks
5.

a)

Define resistivity of a conductor. How does it depend upon temperature? Why does resistivity of a good conductor increase with increase in temperature?

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4 Marks
b)

What is the relation between Thevenin's equivalent circuit and Norton's equivalent circuit?

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4 Marks
c)

What are ohmic and non-ohmic resistances?

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4 Marks
6.

a)

Explain briefly about alternating current.

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4 Marks
b)

Distinguish between the mean value and root mean square value of an alternating current. Deduce expressions for the true mean value and the root mean square value of an alternating current represented by the equation i = Io sin ωt.

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8 Marks
7.

a) What do you mean by Phase and Phase difference?

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4 Marks
b)

Find the procedure to determine the average value of current.

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4 Marks
c) An alternating current varying sinusoidally with a frequency of 50 Hz has an RMS value of 20 A. Write down the equation for the instantaneous value and find this value for 0.0025 sec and 0.0125 sec after passing through a positive maximum value.

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4 Marks
8.

a)

Find the current following through the 40 resistor in fig. below.
A) when E= 2V and E= 12V

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6 Marks
b)

Obtain Thevenin's and Nortons's equivalent circuits at AB in fig. below:

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6 Marks
View 117 Topic-wise Questions for this Course

Contributors of this Question:

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Uploaded By: Onebyzero Edu (Test User) July 28, 2024, 1:57 p.m.
Converted By (Img/PDF to Text): Baishakhi Bir Nov. 30, 2025, 12:45 a.m.
Reviewed By: Obaydul Hasan Nayeem Nov. 30, 2025, 8:10 a.m.
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