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
  • 5.6 Power law, Resister Power Disipation

    Practice


    B-005-06-01
    Why would a large size resistor be used instead of a smaller one of the same resistance?
    For better response time
    For a higher current gain
    For less impedance in the circuit
    For greater power dissipation

    B-005-06-02
    How many watts of electrical power are used by a 12-VDC light bulb that draws 0.2 ampere?
    2.4 watts
    60 watts
    24 watts
    6 watts

    B-005-06-03
    The DC input power of a transmitter operating at 12 volts and drawing 500 milliamps would be:
    20 watts
    6 watts
    500 watts
    12 watts

    B-005-06-04
    When two 500 ohm 1 watt resistors are connected in series, the maximum total power that can be dissipated by the resistors is:
    1 watt
    2 watts
    1/2 watt
    4 watts

    B-005-06-05
    When two 500 ohm 1 watt resistors are connected in parallel, they can dissipate a maximum total power of:
    1/2 watt
    1 watt
    2 watts
    4 watts

    B-005-06-06
    If the voltage applied to two resistors in series is doubled, how much will the total power change?
    increase four times
    decrease to half
    double
    no change

    B-005-06-07
    If the power is 500 watts and the resistance is 20 ohms, the current is:
    2.5 amps
    10 amps
    25 amps
    5 amps

    B-005-06-08
    A 12 volt light bulb is rated at a power of 30 watts. The current drawn would be:
    30/12 amps
    18 amps
    360 amps
    12/30 amps

    B-005-06-09
    If two 10 ohm resistors are connected in series with a 10 volt battery, the power consumption would be:
    5 watts
    10 watts
    20 watts
    100 watts

    B-005-06-10
    One advantage of replacing a 50 ohm resistor with a parallel combination of two similarly rated 100 ohm resistors is that the parallel combination will have:
    the same resistance but lesser power rating
    greater resistance and similar power rating
    the same resistance but greater power rating
    lesser resistance and similar power rating

    B-005-06-11
    Resistor wattage ratings are:
    calculated according to physical size
    expressed in joules per second
    determined by heat dissipation qualities
    variable in steps of one hundred