(Solved): Select the correct statement(s) regarding AC signals. a. both current and voltage change over tim ...

Select the correct statement(s) regarding AC signals. a. both current and voltage change over time b. AC can be represented as either a periodic or aperiodic wave c. in a sinusoidal circuit, voltage may be out-of-phase from the current waveform d. all statement are correct QUESTION 10 The time varying components of capacitance and inductance results in reactive power elements that can decrease power transfer. True False QUESTION 11 Select the correct statement(s) regarding impedance in a communications circuit. a. capacitance and inductance changes with signal frequency b. impedance is comprised of only real resistive components c. the greater the reactance in a circuit, the better the circuit d. all are correct statements QUESTION 12 Select the correct statement(s) regarding EM waves. a. EM depolarization enables frequency reuse b. RHCP and LHCP are EM waves that are considered linearly polarized c. RHCP or LHCP waves can be created by transmitting the same signal, separated by 90 degrees, using orthogonal polarizations d. all of the statements are correct What is correct regarding an ideal isotropic antenna? a. An ideal isotropic antenna is a highly efficient antenna used extensively in today's communication systems b. An ideal isotropic antenna is a specialized antenna used to direct EM signal energy towards a specific direction c. An ideal isotropic antenna is a theoretical antenna that does not exist in practice, but is useful in explaining power density and unguided EM signal attenuation d. None of the above are correct statements QUESTION 16 Power density from a transmitting antenna is dependent upon the distance from the antenna. Power density decreases as distance increases. True False QUESTION 17 A signal has a frequency range from \( 300 \mathrm{MHz} \) to \( 1 \mathrm{GHz} \). What is the frequency bandwidth in \( \mathrm{Hz} \) ? a. \( 1300 \mathrm{E} 6 \mathrm{~Hz} \) b. \( 700 \mathrm{GHz} \) c. \( 700 \mathrm{E} 6 \mathrm{~Hz} \) d. \( 130 \mathrm{MHz} \) QUESTION 18 Select the correct statement(s) regarding electrical and electromagnetic (EM) information/signal waves. a. an electrical signal travelling through a guided conductive wire will create a surrounding EM wave that is proportional to the current b. electrical and EM signals carrying information will have an associated bandwidth that can be seen in the frequency domain c. an EM wave in the RF part of the spectrum will create a current in a receive antenna that is proportional to the RF wave d. all are correct statements