Exam Primer
Overview
1. Regulations and Policies
Authority and Regulations
Licence
License Penalties
Certificate
Operation, Repair
Content Restrictions
Operating Restrictions
Interference
Emergencies
Non-remuneration, Privacy
Call Signs
Other Countries
Frequency Bands
Power Allowed
unmodulated carriers, retransmission
amplitude modulation, frequency stability, me
International Telecommunication Union (ITU)
Exams
Antenna Structures
RF Field Strength
Resolving Complaints
2. Operating and Procedures
VHF/UHF Repeaters - Voice
Phonetic Alphabet
Voice Operating Procedures
tuning, testing and dummy loads
Morse Code (CW) procedures
RST signal reporting, S meter
Q Signals
Emergency Operating Procedures
Record Keeping, Antenna Orientation and Maps
3. Station Assembly, Practice and Safety
Layout of HF Stations
Layout of FM Transmitters
Layout of FM Receivers
Layout of CW Transmitters
Layout of SSB/CW receivers
Layout of SSB Transmitters
Layout of Digital Systems
Layout of Regulated Power Supplies
Layout of Yagi-Uda Antennas
Receiver Fundamentals
Transmitter, carrier, keying, AM
Carrier Suppression, SSB
Frequency and Phase Modulation
Station Accessories
Digital Modes
Batteries
Power Supplies
Electrical Safety
Antenna and Tower Safety
RF Exposure Safety
4. Circuit Components
Amplifier Fundamentals
Diodes
Bipolar Transistors
Field-effect Transistors
Tiode Vacuum Tubes
Resister Color Codes
5. Basic Electronics and Theory
Metric Prefixes
Basic Concepts
Circuits
Ohm's law
Series and Parallel Resistors
Power law, Resister Power Disipation
AC and frequency
Ratios, Logarithms and Decibels
Inductance and Capacitance
Reactance and Impedance
Magnetica and Transformers
Resonance and Tuned Circuits
Meters and Measurements
6. Feedlines and Antenna Systems
Impedance and Feedlines
Balanced and Unbalanced feedlines
Feedlines and Connectors
Line Losses
Standing Wave Ratio
Impedance Matching
Isotropic Sources, Polarization
Wavelength vs Physical Length
Antenna Radiation Patterns
Vertical Antennas
Yagi Antennas
Wire Antennas
Quad/loop Antennas
7. Radio Wave Propagation
Propogation Types
Ionospheric Regions
Hops and Skips
Ionosphere Issues
Solar Activity
MF and HF and Skywaves
VHF and UHF, Sporadic-E, Aurira, Ducting
Scatter - HF, VHF, UHF
8. Interference and Suppression
Front-end overload
Audio Rectification, Bypass Capacitors, Ferri
Intermodulation, Spurious, Key-clicks
Harmonics, Splatter, Transmitter Adjustments
Filters
5.10 Reactance and Impedance
Practice
B-005-10-01
How does a coil react to AC?
As the amplitude of the applied AC increases, the reactance decreases
As the amplitude of the applied AC increases, the reactance increases
As the frequency of the applied AC increases, the reactance increases
As the frequency of the applied AC increases, the reactance decreases
B-005-10-02
How does a capacitor react to AC?
As the frequency of the applied AC increases, the reactance decreases
As the frequency of the applied AC increases, the reactance increases
As the amplitude of the applied AC increases, the reactance increases
As the amplitude of the applied AC increases, the reactance decreases
B-005-10-03
The reactance of capacitors increases as:
applied voltage increases
AC frequency decreases
applied voltage decreases
AC frequency increases
B-005-10-04
In inductances, AC may be opposed by both resistance of winding wire and reactance due to inductive effect. The term which includes resistance and reactance is:
resonance
inductance
impedance
capacitance
B-005-10-05
Capacitive reactance:
decreases as frequency increases
applies only to series RLC circuits
increases as frequency increases
increases with the time constant
B-005-10-06
Inductive reactance may be increased by:
a decrease in the applied frequency
a decrease in the supplied current
an increase in the applied voltage
an increase in the applied frequency
B-005-10-07
A choke coil of 4.25 microhenrys is used in a circuit at a frequency of 200 MHz. Its reactance is approximately:
5 740 ohms
5 340 ohms
7 540 ohms
4 750 ohms
B-005-10-08
The capacitive reactance of a 25 microfarad capacitor connected to a 60 hertz line is:
106.1 ohms
9 420 ohms
2.4 ohms
1 500 ohms
B-005-10-09
A power-supply filter has a capacitor of 10 microfarad. What is the capacitive reactance of this capacitor to a frequency of 60 hertz?
200 ohms
100 ohms
500 ohms
265 ohms
B-005-10-10
What is the approximate inductive reactance of a 1 henry choke coil used in a 60 hertz circuit?
376 ohms
3760 ohms
188 ohms
1888 ohms
B-005-10-11
In general, the reactance of inductors increases with:
increasing AC frequency
decreasing AC frequency
decreasing applied voltage
increasing applied voltage