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What is 75 ohm?
Ohms are a measure of resistance to electric current.You're probably talking about a 75 ohm coaxial cable. In this case, 75 ohms is the characteristic impedance of the cable.
What is an acceptable value of 132kv Isolator contact resistance test?
132kv MOCB acceptable value of somthing 150 micro ohms.
What size steel wire armoured cable for 40 amps 230 volts at 500 meters away?
On a 230 v supply assuming a volt-drop of 5% that is 11.5 v, so the maximum cable resistance is 11.5 / 40 in ohms, 0.2875 ohms so for 1000 metres of cable in total you need a cable that has 0.0002875 ohms of resistance per metre. Copper with a cross-section of 1 mm2 has resistance of 0.0168 ohms per metre so the size of cable needed is 0.0168 / 0.0002875 mm2, which is 58.43 mm2, so a cable of 60 mm2 should be selected.
What is the purpose of 50 ohms antenna?
A; it is to match the cable line impedance to the receiver for maximum transfer of energy
What is the difference between Ohms and Ohms CT in impedance of an audio transformer?
The difference in between Ohms and Ohms CT is that in Ohms CT it has CT at the end.
What is the minimum acceptable value of insulation resistance of instrument cable?
more than 1 G ohms is acceptable. cheers
How do you know if you have a bad cable when checking ohms?
If the ohms are infinite or greater than one megohm you can conclude the cable is bad. Usually if the ohms are greater than 3 ohms the cable is bad. If the cable is less than 3 ohms it depends on what the cable is used for and how long it is.
What is an acceptable value of 400kv Isolator contact resistance test?
400mega ohms acceptable....
What size electrical wire do you need to run from a 200amp meter 600ft to a 120amp subpanel?
Assuming it's 240 volts and a 5% voltage drop is acceptable, the resistance of the cable must be less than 12/120 or 0.1 ohms. That is a resistance per ft of 0.1/1200 or 0.0000833 ohms/ft, or 0.0833 ohms per kft. The cable size is 00 or 2/0
What is LV cable insulation resistance acceptance value?
The minimum acceptable insulation resistance value is calculated using the following formula: Rinsulation= (Vrated + 1 ) x (304.8 / L ) Where: Rinsulation is the minimum acceptable insulation resistance value, in mega-ohms; Vrated is the rated voltage of the cable (typically printed on the cable), in kilovolts; and L is the length of the cable, in meters (if the cable length is in feet, replace the number 304.8 with 1000).
What is the acceptable value of grounding resistance for any application?
An acceptable resistance for a ground to ground plate system is 2 ohms with a maximum allowance to 5 ohms. If the measured resistance is above 5 ohms more grounding rods or plates have to be added to reduce the resistance down to the acceptable levels.
What is the acceptable value of contact resistance?
30 micro ohms
You want to fit a heater in a outhouse from a domestic 240v supply the cable has a resestance of 1.5 ohms and the heater has a resistance of 28.5 ohms what is the voltage drop in the cable?
31.5
What is 75 ohm?
Ohms are a measure of resistance to electric current.You're probably talking about a 75 ohm coaxial cable. In this case, 75 ohms is the characteristic impedance of the cable.
What is an acceptable value of 132kv Isolator contact resistance test?
132kv MOCB acceptable value of somthing 150 micro ohms.
What size steel wire armoured cable for 40 amps 230 volts at 500 meters away?
On a 230 v supply assuming a volt-drop of 5% that is 11.5 v, so the maximum cable resistance is 11.5 / 40 in ohms, 0.2875 ohms so for 1000 metres of cable in total you need a cable that has 0.0002875 ohms of resistance per metre. Copper with a cross-section of 1 mm2 has resistance of 0.0168 ohms per metre so the size of cable needed is 0.0168 / 0.0002875 mm2, which is 58.43 mm2, so a cable of 60 mm2 should be selected.
What is the acceptable value of contact resistance in 415V air circuit breaker?
415v air circuit breaker acceptable value of 0.01 ohms and lessthan
