Global Coal & Mining Electrical Engineer Interview Questions, Process, and Tips

A circuit breaker is an electrical switch that automatically interrupts the flow of current when it exceeds a certain limit.

• It is used to protect electrical circuits from damage caused by overloading or short circuiting.

• It works by detecting the excess current and tripping the switch to break the circuit.

• It can be reset manually or automatically depending on the type of circuit breaker.

• Examples include thermal circuit ...read more

There are typically three levels of voltage used in industry: low voltage, medium voltage, and high voltage.

• Low voltage is typically used for lighting and small appliances

• Medium voltage is used for larger equipment and machinery

• High voltage is used for power transmission and distribution

• The specific voltage levels may vary depending on the industry and location

• Safety measures must be taken when working with high voltag

DG is a backup power source for a plant. It works by converting fuel into electricity.

• DG stands for Diesel Generator

• It is required for a plant to ensure uninterrupted power supply in case of power outages or grid failures

• DG works by converting fuel (usually diesel) into mechanical energy which is then converted into electrical energy

• It consists of an engine, alternator, fuel system, cooling system, and control panel

• DGs...read more

A weight bridge is a device used to measure the weight of vehicles and their contents.

• It consists of a platform on which the vehicle is driven and sensors that measure the weight.

• The sensors send the weight data to a computer or display for the user to read.

• Weight bridges are commonly used in industries such as transportation, agriculture, and waste management.

• They are also used by government agencies to enforce weight...read more