DEC Infra Project Incharge Interview Questions and Answers

OCB stands for Oil Circuit Breaker, a type of circuit breaker that uses oil as the medium for arc extinction.

• OCB is commonly used in high voltage applications.

• The oil in OCB helps to extinguish the arc that forms when the circuit breaker interrupts the current flow.

• OCBs are known for their reliability and ability to handle high current interruptions.

• Example: A transformer substation may use OCBs for circuit protection.

APFC Panel stands for Automatic Power Factor Capacitor Panel.

• APFC Panel is used to improve power factor in electrical systems.

• It automatically switches capacitors in and out of the circuit to maintain a desired power factor.

• Helps in reducing electricity bills by avoiding penalties for low power factor.

• Example: APFC Panel is commonly used in industries and commercial buildings.

• It helps in optimizing energy usage and red