All underground cables have relatively high values of capacitance, due to the close proximity of their cores and earthed (grounded) metallic sheath. Manufacturers provide data for their cables, which express their capacitance in terms of capacitance per unit length, e.g. microfarads per metre.
Certain categories of underground cable-fault can be located by measuring the capacitance (using an appropriate bridge circuit) of the healthy section of the cable then, having determined the capacitance per unit length for that type of cable, measuring-off the distance along the cable route to the fault position.
Same installation as non armored cable.
The type of cable that enables the longest transmission with the lowest loss is called Goubau line, or G-line, for short. This line has far less loss than either coaxial cable or parallel line (twinlead). By using conical shaped "launchers", G-line creates a type of waveguide.
In order to determine proper gauge of welding cable you must first determine how long the distance you will need in cable, the entire length for both electrode side as well as work clamp side, and you also need to know the amperage you will be using. Once you determine this there are various references online and offline, most commonly in the owners manual to most welding machines, that will give you the proper size based on the amperage and total length. there are a few different factors in determining the size of welding cable you use. Thickness of base metal, distance from machine to worksite, and amperage. I am a welder in the navy and sometimes we run our leads over far distances therefore we need a bigger welding lead to handle the increase in amperage to maintain the proper work temperature. There may be more reasons for using a bigger cable but I am not sure.
In order to calculate the extension of the cable we must first calculate the strain. Strain is related to Young's modulus using the following relation:E = σA / εAWhere:E = Young's ModulusσA = Axial StressεA = Axial StrainTherefore to calculate the strain, we must first calculate the axial stress in the cable:σA = Force / AreaThe cross sectional area (CSA) of the cable is equal to:CSA = (pi(d2))/4 = pi x r2CSA = pi(0.0036)2CSA = 4.0715x10-5 m2Axial Stress = (500 x 9.81) / 4.0715x10-5σA = 120471449.98 PaAxial Stress = 120.47144998 MPaStrain of cable (εA) = Axial Stress / Young's ModulusεA = 120.471x106 / 210x109εA = 5.736735713x10-4To calculate the extension of the cable:εA = Extension / Original LengthTherefore:Extension = εA x Original Length= 0.0045893885704 m≈ 4.6 mm of extension.
Using its Taylor-series.
i dont know that's why I'm asking
By checking how deep the rope is in the water.
Distance divided by speed will give you the time it took to travel the distance.
By using Pythagoras' theorem.
You can calculate this using the formula:time = distance / speed
The maximum distance a utp cable can handle is 100 m. If you need to bridge over 200 meter and you can only utp cable, you will need to put in enough hubs or switches so that the length of utp cable is never more than 100 m. You can forego of the utp cable and make use of COAX cable. A good quality cable will transmit signals over around 300 m. distance. You can forego of the utp cable and make use of fiber optic cable. Then you can transmit signals over a 40 km distance. Wireless Microwave and WiMax would be an option to cover the distance using radio waves.
There are several formulae for different cases. For the case of a constant speed, use the formula: distance = speed x time.
Using UTP or STP cable, 100 meters per segment.
52.5 feet
Since WE don't know where YOU are - we cannot help you ! Try using Google Earth to calculate the distance !
There are many advantages of using cable clips. One of the many advantages of using cable clips is you can hook up cable from extended cords easier and quicker than normal.
A distance-time graph is created by placing the distance on the vertical axis with the time placed on the horizontal axis. The values can then be plotted using distance traveled on different intervals.