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10+ Nippon Steel Sumikin Engineering Interview Questions and Answers

Updated 5 Feb 2024
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Q1. Bill of material of 1KM underground line 33 KV ,11,KV,LT lines

Ans.

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.

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Q2. Bill of material of 1 KM 11 KV line

Ans.

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

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Q3. Testing commissioning of RMU ,relay setting

Ans.

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

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Q4. Bill of material of 1 KM AB cable line

Ans.

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

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Discover Nippon Steel Sumikin Engineering interview dos and don'ts from real experiences

Q5. jointing of cables Jointing of conductors

Ans.

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

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Q6. Size of conductors Size of cables

Ans.

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

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Q7. What is GTP What is MQP What is FQP

Ans.

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

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Q8. What is lightning arrestor

Ans.

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.

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Q9. What is discharge rods

Ans.

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.

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Q10. What is HDD machine

Ans.

HDD machine is a drilling machine used for horizontal directional drilling.

  • HDD stands for Horizontal Directional Drilling

  • It is used for underground drilling without disturbing the surface

  • It is commonly used for laying pipelines, cables, and conduits

  • The machine uses a drill stem and a drilling fluid to bore through the ground

  • It requires skilled operators and engineers to operate and plan the drilling process

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