EE2901S Basic Electricity & Electronics 1

DCCircuitAnalysis:Questions

Question 1 Find the equivalent resistance between terminals a & b.

Question 2 Calculate the voltage source required for terminals a & b to develop a voltage of 10 V across R2. Given: R1 = 1 , R2 = 2 , R3 = 6 , R4 = 12 . Question 3

Find the current I1 when R2 = R3 = 10 , R4 = 7 .

Question 4 Identify: (a) all nodes, (b) all branches, (c) all meshes & (d) all loops.

R1

R2 R3

R4

V1

R1 R2

R3

a

R4

b

I1 10A

4

12 6

4

4

2 2

3

EE2901S Basic Electricity & Electronics 2

DCCircuitAnalysis:Questions

Question 5 Find the mesh currents I 1, I2, I3 & I4 when V1 = 12 V, R1 = 2 , R2 = 1 , R3 = 4 , R4 = 6 , R5 = 5 .

Question 6 Determine the node voltages V1, V2 & V3, provided that VS = 170 V, IS = 9 A, R1 = 1 , R2 = 50 , R3 = 15 , R4 = 20 , R5 = 2 , R6 = 47 , R7 = 4 .

R1

R2

R3 R4

IS

R5

R6 R7

VS

V1 V2 V3

R1

V1

R2

R4

R5 R3

I4

I2

I1

I3

EE2901S Basic Electricity & Electronics 3

R3

R2

R1 R4

R5 Vs Is

Vs R4 R3

R2

R1

R5

Is R6

R7

DCCircuitAnalysis:Questions

Question 7 Evaluate the current flowing through R1 using Thvenin Theorem when

VS = 170 V, IS = 9 A, R1 = 50 , R2 = 1 , R3 = 15 , R4 = 20 , R5 = 2 , R6 = 47 , R7 = 4 . Question 8 Find the current in R5 using Norton equivalent circuit when

VS = 2 V, IS = 2 A, R1 = 1 , R2 = 3 , R3 = 1 , R4 = 3 , R5 = 2 . Question 9

Given: VTH = 35 V, RT = 600 . If the conditions for maximum power transfer exist, determine (1) The value of RL. (2) The power developed in RL. (3) The efficiency of the circuit .

RT

RL Vth VTH

RTH