Q1: Answer two of the following questions: a)For the circuit shown in fig.(1), v = 120e-sor V and i = 30e-50r A, 1>0 (a) Find L and R. (b) Determine the time constant. (c) What fraction of the initial energy is dissipated in 10 ms? (The initial energy in the inductor is = ½ L i¹) Fig.(1) L

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Q1: Answer two of the following questions:
a)For the circuit shown in fig.(1),
v = 120e-sor V
and
i = 30e-50r A, 1>0
(a) Find L and R.
(b) Determine the time constant.
(c) What fraction of the initial energy is dissipated in 10 ms? (The initial energy in the
inductor is = ½ L i¹)
Fig.(1)
L
b) Non-sinusoidal voltage applied on 102 resistance with consumed power 520w and the
current i(t)=10sinwt+13 sin3wt+0.5 sin5wt Amp. Find the value of I, and the voltage effective
value.
c) For the circiut shown in fig.(2), the switch has been closed for a long time. It opens at t=0,
find V₁(t) for t>0.
SQ
www
20 V
2A 120
202
Fig.(2)
60
ww
0.5 H
Transcribed Image Text:Q1: Answer two of the following questions: a)For the circuit shown in fig.(1), v = 120e-sor V and i = 30e-50r A, 1>0 (a) Find L and R. (b) Determine the time constant. (c) What fraction of the initial energy is dissipated in 10 ms? (The initial energy in the inductor is = ½ L i¹) Fig.(1) L b) Non-sinusoidal voltage applied on 102 resistance with consumed power 520w and the current i(t)=10sinwt+13 sin3wt+0.5 sin5wt Amp. Find the value of I, and the voltage effective value. c) For the circiut shown in fig.(2), the switch has been closed for a long time. It opens at t=0, find V₁(t) for t>0. SQ www 20 V 2A 120 202 Fig.(2) 60 ww 0.5 H
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