A short chain is usually attached to the rear side of pet...
A short chain is usually attached to the rear side of petro tanker trailing behind it to ensure that the
charges generated by friction in the tanker are conducted to the earth
chain vibrates in resonance with the tanker’s engine
heat generated by friction in the engine is conducted to the earth
petrol tanker is balanced on the road
tanker does not exceed a certain speed limit
Correct answer is A
No explanation has been provided for this answer.
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