FCCライセンス General 7月 1 2024 SUBELEMENT G5A SUBELEMENT G5A G5A – Reactance; inductance; capacitance; impedance; impedance transformation; resonance 1 / 12 G5A01What happens when inductive and capacitive reactance are equal in a series LC circuit? A. Resonance causes impedance to be very high B. Impedance is equal to the geometric mean of the inductance and capacitance C. Resonance causes impedance to be very low D. Impedance is equal to the arithmetic mean of the inductance and capacitance 2 / 12 G5A02What is reactance? A. Opposition to the flow of direct current caused by resistance B. Opposition to the flow of alternating current caused by capacitance or inductance C. Reinforcement of the flow of direct current caused by resistance D. Reinforcement of the flow of alternating current caused by capacitance or inductance 3 / 12 G5A03Which of the following is opposition to the flow of alternating current in an inductor? A. Conductance B. Reluctance C. Admittance D. Reactance 4 / 12 G5A04Which of the following is opposition to the flow of alternating current in a capacitor? A. Conductance B. Reluctance C. Reactance D. Admittance 5 / 12 G5A05How does an inductor react to AC? A. As the frequency of the applied AC increases, the reactance decreases B. As the amplitude of the applied AC increases, the reactance increases C. As the amplitude of the applied AC increases, the reactance decreases D. As the frequency of the applied AC increases, the reactance increases 6 / 12 G5A06How does a capacitor react to AC? A. As the frequency of the applied AC increases, the reactance decreases B. As the frequency of the applied AC increases, the reactance increases C. As the amplitude of the applied AC increases, the reactance increases D. As the amplitude of the applied AC increases, the reactance decreases 7 / 12 G5A07What is the term for the inverse of impedance? A. Conductance B. Susceptance C. Reluctance D. Admittance 8 / 12 G5A08What is impedance? A. The ratio of current to voltage B. The product of current and voltage C. The ratio of voltage to current D. The product of current and reactance 9 / 12 G5A09What unit is used to measure reactance? A. Farad B. Ohm C. Ampere D. Siemens 10 / 12 G5A10Which of the following devices can be used for impedance matching at radio frequencies? A. A transformer B. A Pi-network C. A length of transmission line D. All these choices are correct 11 / 12 G5A11What letter is used to represent reactance? A. Z B. X C. B D. Y 12 / 12 G5A12What occurs in an LC circuit at resonance? A. Current and voltage are equal B. Resistance is cancelled C. The circuit radiates all its energy in the form of radio waves D. Inductive reactance and capacitive reactance cancel Your score isThe average score is 0% 0% Restart quiz Ed 0 コメント
