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Amateur Extra Class: 2020–2024
Today
Sections
E1: Commission's Rules
E2: Operating Procedures
E3: Radio Wave Propagation
E4: Amateur Practices
E5: Electrical Principles
E6: Circuit Components
E7: Practical Circuits
E8: Signals and Emissions
E9: Antennas and Transmission Lines
E0: Safety
Quick Index
Practice Test
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Element 4
E7
E7A
E7A11
E7A11:
What type of logic defines "1" as a high voltage?
Reverse Logic
Assertive Logic
Negative logic
Positive Logic
E7A01
E7A02
E7A03
E7A04
E7A05
E7A06
E7A07
E7A08
E7A09
E7A10
E7A11