NatWest Group Interview Questions and Answers

Earthing is necessary in switchyards to protect equipment and personnel from electrical hazards.

• Earthing provides a low resistance path for fault currents to flow, preventing damage to equipment and reducing the risk of electrical shock to personnel.

• It helps to maintain the potential of the equipment at zero volts, preventing the buildup of static electricity.

• Earthing also helps to reduce electromagnetic interference (EMI) and radio frequency interference (RFI) in the switchy...read more

High voltage transmission lines typically use ACSR conductors for 220 kV and 400 kV systems.

• ACSR (Aluminum Conductor Steel Reinforced) conductors are commonly used for high voltage transmission lines

• ACSR conductors consist of a central steel core surrounded by aluminum strands

• The steel core provides strength and support, while the aluminum strands conduct electricity

• ACSR conductors are lightweight, strong, and have good conductivity, making them ideal for high voltage applica...read more

Switchyard is a substation that connects power from generators to the grid. Switchgear is the equipment used to control and protect the switchyard.

• Switchyard is a part of an electrical power system that connects generators to the grid

• It is a substation that contains transformers, circuit breakers, and other equipment

• Switchgear is the equipment used to control and protect the switchyard

• It includes devices such as circuit breakers, relays, and disconnect switches

• Switchgear is u...read more

Zebra conductor is a type of cable used in high-voltage power transmission.

• It is a concentric cable with a central core surrounded by layers of conductive and insulating materials.

• The layers are arranged in a striped pattern, giving the cable its name.

• Zebra conductors are used in high-voltage power lines to reduce corona discharge and improve efficiency.

• They are also used in underground power transmission systems.

• Zebra conductors are more expensive than traditional cables but...read more

MCR stands for Maximum Continuous Rating and CRP stands for Control Room Panel.

• MCR is the maximum power output that a generator or motor can sustain continuously without overheating or damaging its components.

• CRP is a control panel that allows operators to monitor and control various electrical systems in a facility or plant.

• MCR and CRP are important concepts in electrical engineering and are commonly used in power generation and distribution systems.

• For example, a power plan...read more