If a Code Is Used to Detect and Correct Single-Digit

question 5

Multiple Choice

If a code is used to detect and correct single-digit errors, which of the following are true statements? I: Its weight should be at least 2.
II: The distance between any two code words should be at least 2.

• A) I only
• B) II only
• C) both I and II
• D) neither I nor II

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Definitions:

Discriminator

An electronic circuit used to demodulate frequency-modulated signals, converting changes in frequency into amplitude variations.

Resonator

A device or system designed to oscillate with maximum amplitude at a specific frequency, often used in electronic circuits to select particular frequencies from a complex signal.

Cut-off Frequency

The frequency at which the magnitude of a signal is reduced by a specific ratio, marking the boundary between passband and stopband in a filter’s performance.

Variable Capacitors

Capacitors whose capacitance value can be adjusted or varied, often used in tuning circuits or as part of frequency modulating systems.