Physics, 20.03.2021 14:00 salihanegawo
1. A sinusoidal alternating quantity has a frequency f = 100 Hz. Determine the period T e
pulsation .
2. A sinusoidal voltage has the following analytical expression v (t) = 127.8 * sin (942.78 * t).
Determine the effective value Veff and the frequency.
3. An inductor with L = 30 mH is powered by a sinusoidal voltage with Veff = 15 V at the frequency
f = 60 Hz. Determine the rms value of the current Ieff and the exchanged reactive power QL
by the inductor.
4. A series RC bipole with R = 50 and C = 10 F is crossed by a sinusoidal current Ieff = 2.0 A
at frequency f = 100 Hz. Determine the module and phase of the impedance Z.
5. A single-phase power line has RL = 0.4 , XL = 0.5 and powered by a sinusoidal voltage Vi
= 230 V. Determine the percentage voltage drop V%, the active power P and the reactive power QL
supplied to a load that absorbs a current I = 30 A with cos = 0.75.
Answers: 2
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1. A sinusoidal alternating quantity has a frequency f = 100 Hz. Determine the period T e
pulsation...
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