FCC ELEMENT 3 Exam Questions and Answers 100% Pass

FCC ELEMENT 3 Exam Questions and Answers 100% Pass 3-1A1 | The product of the readings of an AC voltmeter and AC ammeter is called: - A. Apparent power. 3-1A2 | What is the basic unit of electrical power? - B. Watt. 3-1A3 | What is the term used to express the amount of electrical energy stored in an electrostatic field? - A. Joules. 3-1A4 | What device is used to store electrical energy in an electrostatic field? - C. Capacitor. 3-1A5 | What formula would determine the inductive reactance of a coil if frequency and coil inductance are known? - B. XL = 2πf L 3-1A6 | What is the term for the out-of-phase power associated with inductors and capacitors? - D. Reactive power. 3-2A1 | What determines the strength of the magnetic field around a conductor? - D. The amount of current. 3-2A2 | What will produce a magnetic field? - C. A current flowing through a conductor. 3-2A3 | When induced currents produce expanding magnetic fields around conductors in a direction that opposes the original magnetic field, this is known as: - A. Lenz's law. Page 2/15 Crafted for Academic Insight by ©KatelynWhitman 2025. All rights reserved. 3-2A4 | The opposition to the creation of magnetic lines of force in a magnetic circuit is known as: - D. Reluctance. 3-2A5 | What is meant by the term "back EMF"? - C. A voltage that opposes the applied EMF. 3-2A6 | Permeability is defined as: - B. The ratio of magnetic flux density in a substance to the magnetizing force that produces it. 3-3A1 | What metal is usually employed as a sacrificial anode for corrosion control purposes? - C. Zinc bar. 3-3A2 | What is the relative dielectric constant for air? - A. 1 3-3A3 | Which metal object may be least affected by galvanic corrosion when submerged in seawater? - D. Stainless steel propeller shaft. 3-3A4 | Skin effect is the phenomenon where: - A. RF current flows in a thin layer of the conductor, closer to the surface, as frequency increases. 3-3A5 | Corrosion resulting from electric current flow between dissimilar metals is called: - D. Galvanic corrosion. 3-3A6 | Which of these will be most useful for insulation at UHF frequencies? - B. Mica. 3-4A1 | What formula would calculate the total inductance of inductors in series? - B. LT = L1 + L2 3-4A2 | Good conductors with minimum resistance have what type of electrons? - D. Many free electrons. 3-4A3 | Which of the 4 groups of metals listed below are the best low-resistance conductors? - A. Gold, silver, and copper. Page 3/15 Crafted for Academic Insight by ©KatelynWhitman 2025. All rights reserved. 3-4A4 | What is the purpose of a bypass capacitor? - C. It removes alternating current by providing a low impedance path to ground. 3-4A5 | How would you calculate the total capacitance of three capacitors in parallel? - B. CT = C1 + C2 + C3. 3-4A6 | How might you reduce the inductance of an antenna coil? - C. Reduce the number of turns. 3-5A1 | What are the two most commonly-used specifications for a junction diode? - D. Maximum forward current and PIV (peak inverse voltage). 3-5A2 | What limits the maximum forward current in a junction diode? - B. The junction temperature. 3-5A3 | MOSFETs are manufactured with THIS protective device built into their gate to protect the device from static charges and excessive voltages: - C. Zener diode. 3-5A4 | What are the two basic types of junction field-effect transistors? - A. N-channel and P- channel. 3-5A5 | A common emitter amplifier has: - B. More voltage gain than a common collector. 3-5A6 | How does the input impedance of a field-effect transistor compare with that of a bipolar transistor? - A. An FET has high input impedance; a bipolar transistor has low input impedance. 3-6A1 | An AC ammeter indicates: - B. Effective (RMS) values of current. 3-6A2 | By what factor must the voltage of an AC circuit, as indicated on the scale of an AC voltmeter, be multiplied to obtain the peak voltage value? - C. 1.414