SAIL Bokaro Steel Plant Maintenance Engineer Interview Questions and Answers

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
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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
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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
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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
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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
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Q6. Lubricant chemicals property
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Q1. By Carefully seeing your Resume " What is your family Background?"
Ans. Sir, I am only son of my father. we are 3 member in family and one uncle.
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Q2. What are manufacturing process for producing a component?
Ans. 
The manufacturing process for producing a component involves several steps.
• Designing the component

• Material selection

• Machining or forming the raw material

• Assembly of the component

• Quality control and inspection
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Q3. 1. Casting 2.Machining 3.Forming 4.Deep Drawing etc....
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Q1. Work on details of all technical aspects.
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Q2. Low cost automation project details
Ans. 
Implemented a low cost automation project for packaging line resulting in 30% reduction in labor cost.
• Identified manual tasks that could be automated

• Researched and selected low cost automation solutions

• Designed and implemented automation system

• Conducted testing and fine-tuning for optimal performance

• Trained operators on new system

• Achieved significant cost savings and increased efficiency
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Q1. Regrading yourself and regrading curr ctc and exp. Ctc
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Q1. What is 7qc tool and Regrading mttr, mtbf, and some question releted to types of breakdown types of failure and how can reduce mttr.
Ans. 
7QC tools are quality control tools used to identify and solve quality-related issues. MTTR stands for Mean Time To Repair, MTBF stands for Mean Time Between Failures.
• 7QC tools include Pareto analysis, cause-and-effect diagram, scatter diagram, etc.

• MTTR is the average time taken to repair a failed component or system.

• MTBF is the average time between failures of a component or system.

• Types of breakdowns can include mech...read more
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Basics of aptitude and technical topics related to ur field of education.

Q1. Tpm & psm realted questions
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Q1. Tpm & psm related
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Q1. Basic plc, programme, drives, electrical machines
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Q2. Personality, analytical question
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Q1. Personality, attitude
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Q1. Mechanical Maintenance
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Q1. Mechanical Maintenance Engineer
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Q2. Maintenance of machine in Mechanical
Ans. 
Maintenance of machines in Mechanical involves regular inspection, cleaning, lubrication, and repair of mechanical components.
• Regularly inspect machines for wear and tear

• Clean machines to prevent buildup of dirt and debris

• Lubricate moving parts to reduce friction and prevent damage

• Repair or replace damaged components to prevent further damage

• Follow manufacturer's maintenance schedule and guidelines

• Train operators on pr
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Q3. Utility &Machines Mechanical Maintenance
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Q4. Utility &Machinery mechanical Maintenance
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Q5. Utility Operation and Mechanical Maintenance of machine shops
Ans. 
Utility operation and mechanical maintenance are crucial for efficient machine shop operations.
• Utility operation involves managing power, water, and air supply to the machines.

• Mechanical maintenance includes regular inspections, cleaning, and repairs of the machines.

• Proper lubrication and alignment of machine parts are also important for smooth operations.

• Examples of machines in a machine shop include lathes, milling m
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Q6. Utility Operation and mechanical Maintenance
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Q7. Utility Operation and maintenance
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Q8. All mechanical Engineering
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Q9. Mechanical +Afew Electrical equipment
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Q10. ETP +hydraulic press +Hand
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Q11. Hand lifter maintenance
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Q12. CNC Lath m/c mechanical Maintenance
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Q13. About mechanical Maintenance
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