Question

Why A.c is required to measure the earth resistance by using earth resistance tester 1) regulates the current 2) increase the voltage drop 3) decrease the voltage drop 4) avoid electrolyte emf

Answer 1

Answer:

4 is correct i think.. beacuse without avoiding electrolyte earth's resistence is not possible..

Answer 2

Option D) Avoid electrolyte emf

Avoid electrolyte emf A.c is required to measure the earth resistance by using earth resistance tester.

• Earth electrode resistance and soil resistivity can both be measured with earth resistance testers. Such measurements are required to guarantee a sufficient low resistance ground connection, which is vital for the safety and functionality of any electrical system.
• The electrical action generated by a non-electrical source, expressed in volts, is known as electromotive force (also known as electromotance, abbreviated emf) in electromagnetism and electronics.
• Batteries, which transform chemical energy into electrical energy, or generators are examples of devices (referred to as transducers) that produce an emf (which convert mechanical energy) The electromotive force is sometimes compared to water pressure. (In this context, the word "force" does not refer to the forces that operate on bodies in interaction).
• A group of tools called ground resistance metres is used to measure how permeable soil is to electric current. To assess the effectiveness of an electrical system's grounding, ground resistance is typically examined.
• The term "earth resistance" or "earth resistance" refers to the resistance provided by the earth electrode to the flow of current into the earth. The resistance between the electrode and the point of zero potential is mostly implied by the ground resistance.

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