ET Tutorial Sheet 1
1. Use mesh analysis to find πππ₯π₯ in the circuit shown in Fig. 1.
[Ans: 3.95 A]
Fig. 1
2. Determine the amount of power delivered/received by the voltage source and the
current source in the circuit of Fig. 2.
[P5V=-6.25 W, P5A=192.5 W]
Fig. 2
3. Determine the voltage Vx in the circuit shown in Fig. 3 using node analysis. [Ans: Vx= 8 V]
Fig. 3
4. Calculate the value of I1 of Fig. 4 using (a) Mesh Analysis and (b) Node Analysis. [Ans:
i1=0.329 A]
1
Fig. 4
5. Use superposition theorem to find the value of πππ₯π₯ in the circuit shown in Fig. 5. [Ans:
10.33 V]
Fig. 5
6. In the circuit of Fig. 6, use Norton theorem to evaluate πππ₯π₯ .
[Ans: 96 V]
Fig. 6
7. Find the Thevenin equivalent voltage as viewed by the resistance R in the circuit shown in
Fig. 7. Find the value of R for maximum power dissipation in it. [Ans: Rth=10 β¦, Vth=14 V,
R=10 β¦]
2
Fig. 7
8. In the circuit shown in Fig. 8, find current πππ₯π₯ using (a) mesh analysis, (b) Thevenin
theorem.
[Ans: -0.5 A]
Fig. 8
9. In the circuit shown in Fig. 9, what is the maximum power that could be dissipated in π
π
πΏπΏ ?
[Ans: 6.325 W]
Fig. 9
10. Find the value of Vth and Rth between the open terminals A and B of the circuit shown in
Fig. 10.
[Ans: 16 V, 2 β¦]
3
Fig. 10
11. In the circuit shown in Figure 11, find the power delivered by 10 V source using Node
Analysis.
[Ans: 8.414 W]
12. In the network shown in Fig. 12, calculate the equivalent resistance:
a) between ‘A’ and ‘B’
b) between ‘A’ and ‘N’.
[Ans: (a) 2.86 β¦, (b) 1.47 β¦]
Fig. 12
4
13. Calculate the (i) rms value, (ii) average value, (iii) form factor and (iv) peak factor of the
ππ
2
signal x(t) as shown in Fig 13.
[Ans: , 0.5ππ,
, √3]
√3
√3
Fig. 13
14. The waveform as shown in Fig. 14 is derived from a sine function and has zero value
when the sine function is negative and also from π‘π‘ = 0 to π‘π‘ = 0.1 and for the
corresponding interval of each period. Find the rms value and the average value of this
waveform.
[Ans: 0.487Vm, 0.2879Vm]
Fig. 14
15. Find the relative heating effects (ratio of rms values) of two current waves of equal
peak value, the one sinusoidal and the other rectangular in wave-form.
[Ans: 1/√2]
5
0
