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ENGG104 (DB125) Electrical Systems
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Evaluate the expression (155 – j63) – (55 – j10) and express the answer in polar coordinates.
The current in the circuit below is:
Evaluate the expression (4 + j5) × (39 <–42°) and express the answer in polar form.
Find the sinusoidal expression of i1
Express 100sin(ωt -90o) in phasor form.
Find the peak-to-peak value of the waveform below.
Find the period of the waveform below.
If e = 345 sin 112t, how long does it take the waveform to complete a half cycle?
Determine the frequency at which a 2.5 μF capacitor and a 30 mH coil have the same reactance.