Energy of power signal is : 

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  1. Finite 
  2. Zero 
  3. Infinite 
  4. 1

Answer (Detailed Solution Below)

Option 3 : Infinite 
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Explanation:
Signals are generally classified into two types: Energy signals and Power signals.

Energy signal: Finite energy (E < ∞), zero average power (P = 0)

Power signal: Infinite energy (E = ∞), finite and non-zero average power (P < ∞)

So, a power signal continues indefinitely and its energy keeps increasing over time. Therefore:

⟹ Energy of a power signal is: Infinite

Final Answer: Option 3) Infinite ✅

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