Doubt regarding Transit time in electro magnetics

In summary, the transit time delay in transmission lines is influenced by all three properties - resistance, inductance, and capacitance - as well as the length of the cable. Even in an ideal conductor with no resistance or inductance, there will still be a delay in a long cable due to the presence of capacitance.
  • #1
dexterdev
194
1
Hello PF,
I was watching a video from NPTEL (transmission lines), where the professor was explaining transit time. Ok now my doubt is that is the transit time delay in transmission lines due to distributed capacitors and inductors alone. Do resistors contribute to delay. For a propagation through long cable even if L and C are not present delay must be there, right?

So transit time delay is a function of conductor property (R,L,C) + length of cable. Is it right?

Another doubt is if ideal conductor is used will there be delay, theoretically? ie if R=0 and no L and C, will there be delay in a long cable?

-Devanand T
 
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  • #2
There is always L and C for any transmission line - even an infinitely thin, infinitely conducting pair of cables.
 

1. What is transit time in electro magnetics?

Transit time in electro magnetics refers to the time it takes for an electromagnetic wave to travel through a medium, such as air or a material, from its source to a receiver.

2. How is transit time calculated?

The transit time can be calculated by dividing the distance traveled by the speed of light in the medium. This is typically represented by the equation t = d/c, where t is the transit time, d is the distance traveled, and c is the speed of light in the medium.

3. What factors affect transit time in electro magnetics?

Transit time can be affected by the properties of the medium, such as its density and composition, as well as any obstacles or interference in the path of the electromagnetic wave. The frequency and wavelength of the wave can also impact the transit time.

4. How does transit time impact communication systems?

In communication systems, transit time can affect the delay and reliability of signals. For example, in wireless communication, longer transit times can result in delayed or distorted signals, leading to poor quality or dropped calls. In high-speed data transmission, minimizing transit time is important to ensure fast and efficient communication.

5. Can transit time be manipulated or controlled?

Yes, transit time can be manipulated or controlled through the use of different materials or mediums, as well as by adjusting the frequency and wavelength of the electromagnetic wave. Advanced technologies, such as fiber optics, allow for faster transit times and more reliable communication.

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