1|Page
FCC General Radiotelephone Operator License
(GROL) Elements 1 and 3 Examination||Verified
Exam!!!||, FCC Commercial Operator License
Program, 2026/2027 – 120 Questions with Verified
Answers||Newest Exam!!!
(3-2A5) What is meant by the term "back EMF"? - Answer-
A voltage that opposes the applied EMF.
(3-2A6) Permeability is defined as: - Answer-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? - Answer-Zinc bar
(3-3A2) What is the relative dielectric constant for air? -
Answer-1
(3-3A3) Which metal object may be least affected by
galvanic corrosion when submerged in seawater? -
Answer-Stainless steel propeller shaft.
,2|Page
(3-3A4) Skin effect is the phenomenon where: - Answer-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: - Answer-D. Galvanic
corrosion.
(3-3A6) Which of these will be most useful for insulation at
UHF frequencies? - Answer-B. Mica.
(3-4A1) What formula would calculate the total inductance
of inductors in series? - Answer-B. LT = L1 + L2
(3-1A1) The product of the readings of an AC voltmeter
and AC ammeter is called: - Answer-Apparent power.
What is the basic unit of electrical power? - Answer-Watt.
(3-1A3) What is the term used to express the amount of
electrical energy stored in an electrostatic field? - Answer-
Joules
,3|Page
(3-1A4) What device is used to store electrical energy in
an electrostatic field? - Answer-Capacitor
(3-1A5) What formula would determine the inductive
reactance of a coil if frequency and coil inductance are
known? - Answer-XL = 2 f L
(3-1A6) What is the term for the out-of-phase power
associated with inductors and capacitors? - Answer-.
Reactive power.
(3-2A1) What determines the strength of the magnetic field
around a conductor? - Answer-The amount of current.
(3-2A2) What will produce a magnetic field? - Answer-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: - Answer-.
Lenz's law.
, 4|Page
(3-2A4) The opposition to the creation of magnetic lines of
force in a magnetic circuit is known as: - Answer-
Reluctance
(3-4A2) Good conductors with minimum resistance have
what type of electrons? - Answer-D. Many free electrons.
(3-4A3) Which of the 4 groups of metals listed below are
the best low-resistance conductors? - Answer-A. Gold,
silver, and copper.
(3-4A4) What is the purpose of a bypass capacitor? -
Answer-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? - Answer-B. CT = C1 + C2 +
C3.
(3-4A6) How might you reduce the inductance of an
antenna coil? - Answer-C. Reduce the number of turns.
FCC General Radiotelephone Operator License
(GROL) Elements 1 and 3 Examination||Verified
Exam!!!||, FCC Commercial Operator License
Program, 2026/2027 – 120 Questions with Verified
Answers||Newest Exam!!!
(3-2A5) What is meant by the term "back EMF"? - Answer-
A voltage that opposes the applied EMF.
(3-2A6) Permeability is defined as: - Answer-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? - Answer-Zinc bar
(3-3A2) What is the relative dielectric constant for air? -
Answer-1
(3-3A3) Which metal object may be least affected by
galvanic corrosion when submerged in seawater? -
Answer-Stainless steel propeller shaft.
,2|Page
(3-3A4) Skin effect is the phenomenon where: - Answer-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: - Answer-D. Galvanic
corrosion.
(3-3A6) Which of these will be most useful for insulation at
UHF frequencies? - Answer-B. Mica.
(3-4A1) What formula would calculate the total inductance
of inductors in series? - Answer-B. LT = L1 + L2
(3-1A1) The product of the readings of an AC voltmeter
and AC ammeter is called: - Answer-Apparent power.
What is the basic unit of electrical power? - Answer-Watt.
(3-1A3) What is the term used to express the amount of
electrical energy stored in an electrostatic field? - Answer-
Joules
,3|Page
(3-1A4) What device is used to store electrical energy in
an electrostatic field? - Answer-Capacitor
(3-1A5) What formula would determine the inductive
reactance of a coil if frequency and coil inductance are
known? - Answer-XL = 2 f L
(3-1A6) What is the term for the out-of-phase power
associated with inductors and capacitors? - Answer-.
Reactive power.
(3-2A1) What determines the strength of the magnetic field
around a conductor? - Answer-The amount of current.
(3-2A2) What will produce a magnetic field? - Answer-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: - Answer-.
Lenz's law.
, 4|Page
(3-2A4) The opposition to the creation of magnetic lines of
force in a magnetic circuit is known as: - Answer-
Reluctance
(3-4A2) Good conductors with minimum resistance have
what type of electrons? - Answer-D. Many free electrons.
(3-4A3) Which of the 4 groups of metals listed below are
the best low-resistance conductors? - Answer-A. Gold,
silver, and copper.
(3-4A4) What is the purpose of a bypass capacitor? -
Answer-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? - Answer-B. CT = C1 + C2 +
C3.
(3-4A6) How might you reduce the inductance of an
antenna coil? - Answer-C. Reduce the number of turns.
