Why do oil tankers have metal chains?

Movement of vehicle on road produces electric charges and hence sparking due to rubbing of tyres on road which is very dangerous since petrol is very inflammable. Metal chains that drag along the road helps in absorbing these dangerous electric charges produced by vehicle’s tyres.

Why do trucks carrying gasoline have chains?

The metal body of the truck near the tyres becomes positively charged by electrostatic induction. To avoid it, the truck has a metal chain on its body dangling to the ground so that the positive charge on its metal body gets neutralised by the electrons coming from the ground through the metal chain.

Why do vehicles carrying inflammable materials?

Answer: Moving vehicle gets charged due to friction. The inflammable material may catch fire due to the spark produced by charged vehicle. When metallic rope is used, the charge developed on the vehicle is transferred to the ground and so the fire is prevented.

Why do trucks that carry gasoline often have chains hanging from their undercarriages and brushing the ground?

Trucks that carry gasoline often have chains dangling from their undercarriages and brushing the ground. This is so that any excess charge is transferred to the ground, keeping the gasoline receptacles neutral. If there is excess charge on the gasoline receptacle, a spark could ignite it.

Why do some cars have wires and chains hanging underneath them?

The Reason Service Vehicles Like Ambulances and Fire Trucks Have Chains Hanging From the Bottom. Chains hanging from service vehicles serve a purpose. Getting stuck behind a service vehicle like a fire truck, school bus, or ambulance can give you time to think.

Why are metal chains suspended in front of tanker with inflammable liquid?

When the vehicle is in motion,due to friction in air,the body of the vehicle gets charged. if accumulated,charge becomes excessive,sparking May occur and inflammable materials may catch fire. therefore metallic chains touching the ground are introduced so that the charge quickly leaks to the earth.

Why are non conductors used to cover the vehicles carrying inflammable substances?

Due to air friction, the body of the tankers also gets charged in addition to the charge developed on tires. In case, the charge accumulation becomes large, it may prove hazardous to the vehicle carrying inflammable materials. So that it does not happen, metallic chains from the vehicles are made to touch the ground.

Why vehicles carrying inflammable materials have long metallic ropes touching the ground?

Vehicles carrying inflammable materials have long metallic ropes touching the ground during their motion. Why? The metallic ropes are used to eliminate the static charges acquired by the vehicle. As the material carried by the vehicle is inflammable, it may catch fire even from a very minute spark.

Why do trucks carrying explosives have a metal chain touching the ground?

Answer Wiki. The trucks carrying explosives have a metal chain touching the ground ,True. This is all because of the charges produced by the friction which is generated by the tires moving. When the tires move they create certain amount of charges which are enough to blow up the explosive tank.

What is the purpose of the metal rope on a vehicle?

Easy and powerful. The metal rope is there to ground the vehicle and prevent static electric discharges that could potentially ignite whatever flammable materials they are carrying. Vehicles carrying inflammable materials have long metallic ropes touching the ground during their motion.

Why do trucks have chains on the sides of the truck?

These chains are used to provide a conducting path to charges developed on the body of the truck due to friction of air. This avoids a spark and hence a possible explosion which might have taken place in the absence of chains.