LOYOLA-ICAM
College of Engineering and Technology (LICET)
Loyola Campus, Chennai - 600 034.
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
Year/Semester: I / II
Date: 18/05/22
CONTINUOUS ASSESSMENT TEST-I
Max. Marks: 60
Duration: 1hr 50mins
EC3251 – CIRCUIT ANALYSIS
CO1: Apply the basic concepts of circuit analysis such as Kirchhoff’s laws, mesh current and node
voltage method for analysis of DC and AC circuits. – K4.
CO2: Apply suitable network theorems and analyze AC and DC circuits. - K4
K1: Remember
K2: Understand
K3: Apply
K4: Analyze
K5: Evaluate
K6: Create
Answer All Questions
PART A – (10x 2 = 20 marks)
Find IA, IB, and IC.
1
[CO1/K3]
Determine the current I in the circuit given after replacing the four sources with a single
equivalent source.
2
[CO1/K5]
Determine a single-value equivalent resistance for the network given. A) a and b with c
unconnected; B) a and c, b unconnected.
3
[CO1/K5]
Determine whether the given circuits are valid. (a,b,c)
4
5
6
[CO1/K5]
The equivalent resistor of four resistors joined in parallel is 30ohms.The current
flowing through them are 0.5, 0.4, 0.6 and 0.1A. Find the value of each resistor.
Calculate the value of RL So that maximum power is transferred from the battery.
Course Instructor
Course Coordinator
[CO1/K2]
[CO2/K3]
HoD
Find the current across 2Ω using Thevenin’s Theorem.
7
[CO2/K3]
Find the equivalent resistor for the given N/W.
8
[CO2/K3]
Determine the maximum power which can be transferred to the Resistor R in the given
circuit.
9
[CO2/K5]
Find the Thevenin’s and Norton’s equivalent for the given N/W.
10
[CO2/K3]
PART – B (2 x 13 = 26)
Answer in detail`
Define three clockwise mesh currents for the circuit given and obtain the value
of V3.
11.
(a)
Course Instructor
[CO1/K2]
Course Coordinator
HoD
(13)
(Or)
Determine all the four nodal voltages.
(b)
[CO1/K5]
(13)
[CO2/K5]
(13)
[CO2/K5]
13
Determine the current through the 2Ω resistor using the superposition theorem.
(a)
The four arms of a bridge have the following resistances: RAB =100Ω; RBC =10Ω;
RCD=4 Ω; RDA=50 Ω. A galvanometer with 20 Ω resistance is connected across
BD. A source of 10v is connected across AC. Find the current through the
galvanometer, using Thevenins’s theorem.
12.
(b)
Course Instructor
Course Coordinator
HoD
PART – C (1 x 14 = 14) (Problems / Case study)
Find Rin for the given N/W
(a)
(i)
[CO1/K4]
(7)
[CO2/K5]
(7)
[CO1/K3]
(7)
[CO2/K3]
(7)
Determine the maximum power delivered to the load in the circuit.
(ii)
(Or)
13.
Find the loop current for the given circuit.
(b)
(i)
Find the Norton’s equivalent for the given circuit.
(ii)
Course Instructor
Course Coordinator
HoD