1- sin 0 cos y = NA 2- NA= n₁(2A)
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- Derive the relationship for maximum power Eb = v/2If the current through and the voltage across acomponent in an electric circuit arei(t) = 17 cos(ωt − π/12) mAv(t) = 3.5 cos(ωt + 1.309) Vwhere ω = 628.3 rad/s, determinea. Whether the component is a resistor, capacitor, orinductor.b. The value of the component in ohms, farads, orhenrys.Two coupled coils with L1=0.5 H and L2= 4.0 H have a coefficient of coupling 0.8. Find the maximum value of inductance EMF in the coil 2 if a current of i1= 20 sin 314t A is passed in coil 1.
- The voltage v = 119 sin(100t+50°) V is connected acroos a 8-H inductor. Determine the current in polar form. Write the magnitude only in four decimal places.Given the following pairs of voltages and currents, indicate whether the element involved is a capacitor, an inductor, or a resistor, and determine the values of C, L or R where ω= 157 rad/s a. v = 2000 sin ωt ; i = 5 cos ωt b. v = 80 sin(157t + 150°); i = 2 sin( 157t + 60°) c. v = 35 sin(ωt − 20°); i = 7 cos( ?? − 110°)Given a parallel RLC circuit comprised of the following element: 76.19-ohm resistor, ideal inductor with reactance of 72.41 ohms; and a capacitor with reactance of 16.55 ohms. Compute for true power in watts given an ac voltage source of 100 cis 0 volts.
- Calculate the reactance of a coil of inductance 0.2H when it is connected to a 50Hz supply. A. 62.83ohms B. 63.82ohms C. 62.38ohms D. 63.28ohmsMany have witnessed the use of an electrical megaphone for amplification of speech to a crowd. A model of a microphone and speaker and the circuit model are shown. Find v(t) for vs = 10sin(100t)u(t), which could represent a person whistling or singing a pure tone. Answer: (1.55 e−0.6t−1.55 cos100t + 0.279 sin100t)VThe voltage v = 106 sin(100t+50°) V is connected acroos a 212-µF capacitor. Determine the current at t = 0.001 s. Write the magnitude only in four decimal places. QUICKLY
- Calculate the voltage at the terminals of a coil of resistance 10 ohms and inductance 15H at the instant when the current is 12A amd increasing at the rate of 6A/sec.An RG58 coaxial cable has a capacitance of 30 pF per foot and a characteristic impedance of 50 ohms. What is the inductance of the cable per foot.Determine: re, Zi, Zo, Av(use exact analysis)