Jindal Steel and Power QC Engineer Interview Questions and Answers

Q1. What information are you seeking regarding ductile iron pipes?
Add your answer
Q2. What are the applications of ductile iron pipes, and what is the manufacturing process involved?
Add your answer

Q1. What is TTT DIAGRAM and its use
Ans. 
TTT diagram is a Time-Temperature-Transformation diagram used in materials science to understand the transformation of phases in a material.
• TTT diagram shows the relationship between temperature, time, and phases in a material during cooling or heating.

• It helps in predicting the microstructure and properties of a material based on its cooling rate.

• TTT diagrams are commonly used in heat treatment processes for metals li...read more
Answered by AI
Add your answer
Q2. What is difference between ceramic and steel
Ans. 
Ceramic is a non-metallic material made from clay, while steel is a metallic material primarily made from iron and carbon.
• Ceramic is non-metallic, while steel is metallic

• Ceramic is made from clay, while steel is primarily made from iron and carbon

• Ceramic is typically more brittle than steel

• Steel is stronger and more durable than ceramic

• Ceramic is often used for decorative purposes or in high-temperature applications, w...read more
Answered by AI
Add your answer
Q3. What is fatigue and what is creep in materials
Ans. 
Fatigue is the weakening of a material due to repeated loading, while creep is the gradual deformation of a material under constant stress.
• Fatigue is the process of progressive and localized structural damage that occurs when a material is subjected to cyclic loading.

• Creep is the time-dependent deformation of a material under constant load or stress.

• Fatigue failure is often characterized by crack initiation and propaga...read more
Answered by AI
Add your answer
Q4. What are the different types of Steel making
Ans. 
Different types of steel making include basic oxygen furnace, electric arc furnace, and open hearth furnace.
• Basic Oxygen Furnace (BOF) - uses oxygen to reduce the carbon content in the steel

• Electric Arc Furnace (EAF) - uses electricity to melt scrap steel and produce new steel

• Open Hearth Furnace - uses a fuel-air mixture to heat the steel and remove impurities

• Other methods include Bessemer process, direct reduced iron,
Answered by AI
Add your answer
Q5. Why do we use alloying elements during Steel making and what are their applications
Ans. 
Alloying elements are used in steel making to improve properties like strength, hardness, corrosion resistance, and machinability.
• Alloying elements are added to steel to enhance specific properties such as strength, hardness, toughness, and corrosion resistance.

• Common alloying elements include chromium, nickel, manganese, molybdenum, and vanadium.

• Chromium is added to improve corrosion resistance, nickel for toughness, ...read more
Answered by AI
Add your answer
Q6. What is SN curve ?
Ans. 
SN curve is a graphical representation of the relationship between stress and fatigue life of a material.
• SN curve shows the number of cycles to failure (N) against the applied stress (S).

• It helps in determining the fatigue life of a material under different stress levels.

• Materials with higher fatigue strength have a steeper slope on the SN curve.

• SN curves are commonly used in engineering to predict the durability of ma
Answered by AI
Add your answer
Q7. What is the composition of pigiron
Ans. 
Pig iron is an intermediate product of the iron industry, made by smelting iron ore in a blast furnace.
• Pig iron is typically around 92-94% iron, with varying amounts of carbon, silicon, manganese, sulfur, and phosphorus.

• It is brittle and not suitable for use in its raw form, but can be further processed into wrought iron or steel.

• The carbon content of pig iron gives it a high carbon equivalent, making it ideal for cast...read more
Answered by AI
Add your answer
Q8. What is lever rule?
Ans. 
Lever rule is a principle used in material science to determine the relative amounts of two phases in a two-phase system.
• Lever rule is used to calculate the fraction of each phase in a two-phase system based on the weight or volume percentages of the phases.

• It is commonly used in metallurgy, ceramics, and other material science fields.

• The lever rule equation is: L = (C - A) / (B - A), where L is the fraction of one pha...read more
Answered by AI
Add your answer

Aptitude and Core Related ( Mine was metallurgy )

10 students in a group, 30 minutes duration, unstructured, topic was " pros and cons of WFH"

Q1. HR QUES -- INTRODUCE YOURSELF, YOUR DREAMS/GOALS, YOUR FAMILY, SPECIAL THING ABOUT YOUR HOMETOWN, INTERESTING KEYPOINTS FROM RESUME, SOCIETIES AND POSITION OF RESPONSIBILITIES.
Add your answer
Q2. TECH QUESTIONS -- TYPES OF DISLOCATIONS, FE-C DIAGRAM, ELLINGHAM DIAGRAM, GIBBS FREE ENERGY, LATENT HEAT, DIFFERENT CRYSTAL STRUCTURES, SLIP PLANES, STEEL MAKING (AOD PROCESS), LE - CHATLIER'S PRINCIPLE, H...read more
Add your answer

Q1. Draw Shear force and bending moment diagram of a fixed beam.
Ans. 
Shear force and bending moment diagrams show internal forces and moments in a fixed beam.
• Shear force diagram shows the variation of shear force along the length of the beam.

• Bending moment diagram shows the variation of bending moment along the length of the beam.

• At supports of a fixed beam, shear force is maximum and bending moment is zero.

• At midspan of a fixed beam, bending moment is maximum and shear force is zero.
Answered by AI
Add your answer
Q2. What is the position of reinforcement of a cantilever beam.
Ans. 
Reinforcement of a cantilever beam is positioned at the bottom to resist tension forces.
• Reinforcement is placed at the bottom of the cantilever beam to resist tension forces.

• The reinforcement helps in preventing the beam from bending or breaking under load.

• Examples of reinforcement materials include steel bars or mesh.

• Proper positioning and sizing of reinforcement is crucial for the structural integrity of the beam.
Answered by AI
Add your answer
Q3. In railway crossing, which type of sleeper is used.
Ans. 
Concrete sleepers are used in railway crossings.
• Concrete sleepers are preferred over wooden sleepers in railway crossings due to their durability and strength.

• Concrete sleepers help in maintaining the stability and alignment of the tracks at railway crossings.

• Examples of concrete sleepers used in railway crossings include monoblock sleepers and twin block sleepers.
Answered by AI
Add your answer

Discussed at infrastructure

Q1. Technical field related questions
Add your answer
Q2. HR related questions.
Add your answer
Q3. AI related questions
Add your answer

Q1. HR related questions
Add your answer

Q1. How to know if Hydraulic cylinder leakage
Ans. 
Check for hydraulic cylinder leakage by inspecting for oil puddles, decreased performance, and abnormal noises.
• Inspect the area around the hydraulic cylinder for oil puddles or stains

• Monitor the performance of the hydraulic system for any decrease in efficiency

• Listen for any abnormal noises coming from the hydraulic cylinder during operation
Answered by AI
Add your answer
Q2. What is NAS
Ans. 
NAS stands for Network Attached Storage, which is a type of storage device that connects to a network to provide shared storage space.
• NAS devices are typically used for storing and sharing files, data backups, and media streaming within a network.

• NAS devices can be accessed by multiple users and devices simultaneously over a network.

• NAS devices often have their own operating system and can run various applications such...read more
Answered by AI
Add your answer

Q1. Process of production
Add your answer
Q2. Final production process
Add your answer

Q1. What is the use of lubricant in roling mill
Ans. 
Lubricant in rolling mills reduces friction between metal surfaces, prevents wear and tear, and improves efficiency.
• Lubricant reduces friction between metal surfaces in rolling mills

• Prevents wear and tear on machinery

• Improves efficiency by reducing energy consumption

• Helps in cooling the metal during the rolling process

• Examples: oil-based lubricants, grease, graphite-based lubricants
Answered by AI
Add your answer
Q2. What are the major cause of roll broken
Ans. 
The major causes of roll breakage in maintenance engineering include material defects, improper setup, excessive tension, and foreign objects.
• Material defects such as weak spots or impurities can weaken the roll and lead to breakage.

• Improper setup or alignment of the roll can cause uneven stress distribution and eventual breakage.

• Excessive tension on the roll can exceed its load-bearing capacity and cause it to break.

• F...read more
Answered by AI
Add your answer
Q3. What is cause of rolling mill bearing broken
Ans. 
The main causes of rolling mill bearing breakage are lack of lubrication, contamination, overloading, and misalignment.
• Lack of lubrication can lead to increased friction and heat generation, causing the bearing to fail prematurely.

• Contamination from dirt, debris, or water can accelerate wear and tear on the bearing surfaces.

• Overloading the bearing beyond its capacity can cause excessive stress and lead to failure.

• Misal...read more
Answered by AI
Add your answer
Q4. Compressor overhead cause
Ans. 
Compressor overhead cause can be due to various factors such as high discharge pressure, low suction pressure, dirty filters, or worn out components.
• High discharge pressure can lead to overheating of the compressor.

• Low suction pressure can cause the compressor to work harder and overheat.

• Dirty filters can restrict airflow and cause the compressor to overheat.

• Worn out components such as valves or seals can lead to ineff
Answered by AI
Add your answer
Q5. How to measure wire rope condition
Ans. 
Wire rope condition can be measured by visual inspection, non-destructive testing, and load testing.
• Visual inspection for signs of wear, corrosion, broken wires, and distortion

• Non-destructive testing methods like magnetic particle inspection, ultrasonic testing, and dye penetrant testing

• Load testing to assess the strength and integrity of the wire rope under working conditions
Answered by AI
Add your answer
Q6. Lubricant chemicals property
Add your answer