If a Carrier Wave Is Modulated with 4 Amplitudes and 4

question 40

Multiple Choice

If a carrier wave is modulated with 4 amplitudes and 4 phase changes,how many possible signal combinations are there?

• A)4
• B)8
• C)16
• D)32

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Definitions:

Universal Instantiation

A logical rule that infers from the truth of a universally quantified statement about all members of a domain, the truth of that statement about any specific member.

Quantifier Negation

The process of applying negation to a statement that contains a quantifier, altering its scope and possibly changing the quantifier type (for example, from universal to existential).

Existential Generalization

A logical operation that infers the existence of at least one object in a domain that satisfies a given proposition.

Existential Instantiation

A logical rule that deduces the existence of at least one instance of a predicate from a general statement.