Al Ahleia Switchgear Interview Questions and Answers

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction. Testing procedure involves various tests to ensure proper functioning.

• Transformers are used to step up or step down voltage levels in electrical circuits.

• Testing procedures include insulation resistance test, winding resistance test, turns ratio test, and oil testing.

• Insulation resistanc...read more

Over current is when the current flowing through a circuit exceeds its rated capacity. Earth fault is when current flows to earth due to insulation failure.

• Over current can cause damage to equipment and can be a fire hazard.

• Earth fault can cause electric shock and damage to equipment.

• Both can be prevented by proper installation and maintenance of electrical systems.

• Examples of protective devices include fuses, circuit

Electrical protection refers to measures taken to prevent electrical hazards and damage to equipment.

• Electrical protection includes the use of circuit breakers, fuses, and surge protectors.

• Grounding and bonding are also important aspects of electrical protection.

• Electrical protection is necessary to prevent electrical shock, fires, and damage to electrical equipment.

• Examples of electrical protection measures include GF...read more

Electroplating is a process of depositing a metal coating onto a conductive surface using an electric current.

• The object to be plated is made the cathode in an electrolytic cell

• The anode is made of the plating metal

• The electrolyte solution contains ions of the plating metal

• When a current is passed through the cell, metal ions are reduced and deposited onto the cathode

• Common applications include coating of jewelry, auto