Exam Question
A circuit has a resistance of 3ohms and an inductance of 0.01H. The voltage across its ends is 60V and the frequency is 50Hz. Calculate
(a) the impedance (6)
(b) the power factor (5)
(c) the power absorbed. (5)
ETO
ETO Exam papers
📅 Jan 2022
Reference Answer
(a) The Impedance
Circuit inductive reactance $X_L = 2πfl$
$$= 2 \times {22\over{7}} \times 50 \times 0.01$$
$= 3.14 ohm$
Circuit inductive reactance $X_L = 2πfl$
$$= 2 \times {22\over{7}} \times 50 \times 0.01$$
$= 3.14 ohm$
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