FCC General Radiotelephone Operator License - Element 3
Exam With Complete Solutions
Answer Key: A - ANSWER Key Topic 1: Electrical Elements
3-1A1 The product of the readings of an AC voltmeter and AC ammeter is called:
A. Apparent power.
B. True power.
C. Power factor.
D. Current power.
Answer Key: B - ANSWER Key Topic 1: Electrical Elements
3-1A2 What is the basic unit of electrical power?
A. Ohm.
B. Watt.
C. Volt.
D. Ampere.
Answer Key: A - ANSWER Key Topic 1: Electrical Elements
3-1A3 What is the term used to express the amount of electrical energy stored in an
electrostatic field?
A. Joules.
B. Coulombs.
C. Watts.
,D. Volts.
Answer Key: C - ANSWER Key Topic 1: Electrical Elements
3-1A4 What device is used to store electrical energy in an electrostatic field?
A. Battery.
B. Transformer.
C. Capacitor.
D. Inductor.
Answer Key: B - ANSWER Key Topic 1: Electrical Elements
3-1A5 What formula would determine the inductive reactance of a coil if frequency and
coil inductance are
known?
A. XL = 𝝅 f L
B. XL = 2𝝅 f L
C. XL = 𝝅 f C
D. XL = 1 / R2+X2
Answer Key: D - ANSWER Key Topic 1: Electrical Elements
3-1A6 What is the term for the out-of-phase power associated with inductors and
capacitors?
A. Effective power.
B. True power.
C. Peak envelope power.
D. Reactive power.
,Answer Key: D - ANSWER Key Topic 2: Magnetism
3-2A1 What determines the strength of the magnetic field around a conductor?
A. The resistance divided by the current.
B. The ratio of the current to the resistance.
C. The diameter of the conductor.
D. The amount of current.
Answer Key: C - ANSWER Key Topic 2: Magnetism
3-2A2 What will produce a magnetic field?
A. A DC source not connected to a circuit.
B. The presence of a voltage across a capacitor.
C. A current flowing through a conductor.
D. The force that drives current through a resistor.
Answer Key: A - ANSWER Key Topic 2: Magnetism
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.
B. Gilbert's law.
C. Maxwell's law.
D. Norton's law.
, Answer Key: D - ANSWER Key Topic 2: Magnetism
3-2A4 The opposition to the creation of magnetic lines of force in a magnetic circuit is
known as:
A. Eddy currents.
B. Hysteresis.
C. Permeability.
D. Reluctance.
Answer Key: C - ANSWER Key Topic 2: Magnetism
3-2A5 What is meant by the term "back EMF"?
A. A current equal to the applied EMF.
B. An opposing EMF equal to R times C (RC) percent of the applied EMF.
C. A voltage that opposes the applied EMF.
D. A current that opposes the applied EMF.
Answer Key: B - ANSWER Key Topic 2: Magnetism
3-2A6 Permeability is defined as:
A. The magnetic field created by a conductor wound on a laminated core and carrying
current.
B. The ratio of magnetic flux density in a substance to the magnetizing force that
produces it.
C. Polarized molecular alignment in a ferromagnetic material while under the influence
of a magnetizing
force.
D. None of these.
Exam With Complete Solutions
Answer Key: A - ANSWER Key Topic 1: Electrical Elements
3-1A1 The product of the readings of an AC voltmeter and AC ammeter is called:
A. Apparent power.
B. True power.
C. Power factor.
D. Current power.
Answer Key: B - ANSWER Key Topic 1: Electrical Elements
3-1A2 What is the basic unit of electrical power?
A. Ohm.
B. Watt.
C. Volt.
D. Ampere.
Answer Key: A - ANSWER Key Topic 1: Electrical Elements
3-1A3 What is the term used to express the amount of electrical energy stored in an
electrostatic field?
A. Joules.
B. Coulombs.
C. Watts.
,D. Volts.
Answer Key: C - ANSWER Key Topic 1: Electrical Elements
3-1A4 What device is used to store electrical energy in an electrostatic field?
A. Battery.
B. Transformer.
C. Capacitor.
D. Inductor.
Answer Key: B - ANSWER Key Topic 1: Electrical Elements
3-1A5 What formula would determine the inductive reactance of a coil if frequency and
coil inductance are
known?
A. XL = 𝝅 f L
B. XL = 2𝝅 f L
C. XL = 𝝅 f C
D. XL = 1 / R2+X2
Answer Key: D - ANSWER Key Topic 1: Electrical Elements
3-1A6 What is the term for the out-of-phase power associated with inductors and
capacitors?
A. Effective power.
B. True power.
C. Peak envelope power.
D. Reactive power.
,Answer Key: D - ANSWER Key Topic 2: Magnetism
3-2A1 What determines the strength of the magnetic field around a conductor?
A. The resistance divided by the current.
B. The ratio of the current to the resistance.
C. The diameter of the conductor.
D. The amount of current.
Answer Key: C - ANSWER Key Topic 2: Magnetism
3-2A2 What will produce a magnetic field?
A. A DC source not connected to a circuit.
B. The presence of a voltage across a capacitor.
C. A current flowing through a conductor.
D. The force that drives current through a resistor.
Answer Key: A - ANSWER Key Topic 2: Magnetism
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.
B. Gilbert's law.
C. Maxwell's law.
D. Norton's law.
, Answer Key: D - ANSWER Key Topic 2: Magnetism
3-2A4 The opposition to the creation of magnetic lines of force in a magnetic circuit is
known as:
A. Eddy currents.
B. Hysteresis.
C. Permeability.
D. Reluctance.
Answer Key: C - ANSWER Key Topic 2: Magnetism
3-2A5 What is meant by the term "back EMF"?
A. A current equal to the applied EMF.
B. An opposing EMF equal to R times C (RC) percent of the applied EMF.
C. A voltage that opposes the applied EMF.
D. A current that opposes the applied EMF.
Answer Key: B - ANSWER Key Topic 2: Magnetism
3-2A6 Permeability is defined as:
A. The magnetic field created by a conductor wound on a laminated core and carrying
current.
B. The ratio of magnetic flux density in a substance to the magnetizing force that
produces it.
C. Polarized molecular alignment in a ferromagnetic material while under the influence
of a magnetizing
force.
D. None of these.
