Why is energy signal having a finite energy value and 'zero value of power'

Click For Summary
SUMMARY

Energy signals possess a finite energy value and a zero average power due to their limited duration, while power signals exhibit finite power and infinite energy because they persist indefinitely. The relationship between energy and power is defined by the equations: Average Power = Total Energy / Time and Energy = ∫(Power)dt. Consequently, energy signals, which are non-repeating and last for a finite time, yield zero average power, whereas power signals, which are continuous, result in infinite energy accumulation.

PREREQUISITES
  • Understanding of signal classification: energy signals vs. power signals
  • Familiarity with the concepts of average power and total energy
  • Basic knowledge of calculus, specifically integration
  • Concept of time duration in signal processing
NEXT STEPS
  • Study the mathematical derivation of energy and power signals
  • Learn about the implications of signal duration on energy and power calculations
  • Explore the concept of Fourier transforms in relation to energy and power signals
  • Investigate real-world applications of energy and power signals in communications
USEFUL FOR

Electrical engineers, signal processing professionals, and students studying communications systems will benefit from this discussion, particularly those interested in the fundamental differences between energy and power signals.

grafica
Messages
23
Reaction score
0
Energy signal?

hai..
i want to know why is energy signal having a finite energy value and 'zero value of power'
similarly the power signal have finite value of power and an INFINITE VALUE OF ENERGY
 
Engineering news on Phys.org


grafica said:
hai..
i want to know why is energy signal having a finite energy value and 'zero value of power'
similarly the power signal have finite value of power and an INFINITE VALUE OF ENERGY

HINT(S):
1) (Average) Power = (Total) Energy / time
2) Energy=\int(Power)dt
3) How much time do you calculate over?
 


hi
it is the general concept irrespective of time
 


grafica said:
hi
it is the general concept irrespective of time

Yes, but a power signal lasts forever. A (finite) energy signal thus has 0 power. A power signal, because of how long it lasts (forever) will also have infinite energy. Unless there's 0 average power.
 

Similar threads

Why do all my clocks run slow?
  • · Replies 4 ·
Replies
4
Views
759
Confused about the Signal to Noise Ratio
  • · Replies 4 ·
Replies
4
Views
4K
Checking if a signal is stationary
  • · Replies 19 ·
Replies
19
Views
4K
Multiple signals controlling relay
  • · Replies 7 ·
Replies
7
Views
737
High School Feasibility of Sending a Radio Signal Detectable from a Neighboring Star
  • · Replies 5 ·
Replies
5
Views
744
Meaning of having powerful signal near to 0Hz
  • · Replies 4 ·
Replies
4
Views
3K
Graduate RLC oscillator vs class A or B amplifier for EM induction
  • · Replies 17 ·
Replies
17
Views
2K
Why Does Doubling Speakers Double Sound Pressure with Less Power?
  • · Replies 35 ·
2
Replies
35
Views
10K
System resonance revisited: Where does the extra energy come from?
  • · Replies 1 ·
Replies
1
Views
2K
Hi,a question regarding Fourier transform and energy of a signals
  • · Replies 2 ·
Replies
2
Views
5K