10+ Nippon Steel Sumikin Engineering Interview Questions and Answers

The bill of material for a 1KM underground line with 33KV, 11KV, and LT lines.

• The bill of material should include all necessary components for the underground line.

• Components may include cables, transformers, switchgear, and other electrical equipment.

• The quantity of each component should be specified in the bill of material.

• The bill of material should also include any necessary accessories such as clamps, connectors, and insulators.

The bill of material for a 1 KM 11 KV line includes various components such as conductors, insulators, transformers, and poles.

• Conductors: Copper or aluminum cables used to transmit electricity.

• Insulators: Materials like porcelain or polymer used to support and isolate the conductors.

• Transformers: Devices used to step up or step down the voltage.

• Poles: Structures to support the conductors and maintain their position.

• Other components may include connectors, clamps, lightning a...read more

Testing and commissioning of RMU and relay setting is a crucial aspect of project engineering.

• Testing and commissioning of RMU involves verifying the functionality of the switchgear and ensuring it is safe for operation.

• Relay setting involves configuring the protection relays to ensure they operate correctly in the event of a fault.

• Testing and commissioning should be carried out in accordance with relevant standards and procedures.

• Documentation of testing and commissioning re...read more

The bill of material for a 1 KM AB cable line includes various components.

• The cable itself

• Insulators

• Connectors

• Poles or towers

• Grounding equipment

• Hardware such as bolts and clamps

• Tools for installation

• Safety equipment

• Transportation costs

• Labor costs

Jointing of cables and conductors is a crucial aspect of project engineering.

• Jointing involves connecting two or more cables or conductors to ensure continuity of electrical flow.

• Various methods of jointing include crimping, soldering, and welding.

• Factors such as the type of cable, voltage, and current capacity must be considered when selecting a jointing method.

• Proper insulation and sealing of joints is essential to prevent moisture and other contaminants from entering the j...read more

The size of conductors and cables is an important factor in determining their electrical properties and performance.

• The size of a conductor is determined by its cross-sectional area, which affects its resistance and current-carrying capacity.

• Cable size is determined by the current it needs to carry and the distance it needs to travel.

• Larger conductors and cables can carry more current and have lower resistance, but may be more expensive and difficult to install.

• Proper sizing ...read more

GTP is a protocol used in cellular communication. MQP and FQP are not commonly used acronyms.

• GTP stands for GPRS Tunnelling Protocol

• It is used in cellular communication to allow data transfer between different networks

• MQP and FQP are not commonly used acronyms and may refer to specific organizations or products

A lightning arrestor is a device used to protect electrical equipment from lightning strikes.

• It is also known as a surge arrester or lightning diverter.

• It works by providing a low-impedance path for lightning current to flow to the ground.

• It is commonly used in power distribution systems, telecommunication networks, and buildings.

• Examples include metal oxide varistors, gas discharge tubes, and carbon block arrestors.

Discharge rods are grounding devices used to discharge static electricity from equipment or machinery.

• Also known as grounding rods or earthing rods

• Typically made of copper or aluminum

• Used in industries such as oil and gas, chemical, and manufacturing

• Prevents damage to equipment and potential safety hazards

• Example: Discharge rods are commonly used in refineries to prevent explosions caused by static electricity buildup.