JSW Group Junior Engineer Mechanical Maintenance Interview Questions and Answers

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
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Q2. What is NAS
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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
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Q1. Any questions in mechanical supervisor
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Q2. Any questions in mechanical field
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Gearbox and fluid coupling replacement work and development

Senior manager and manager and all employees job description for growth and development

Cash study in machanical engineering decision making thermodynamics fluid machanics and heat transfer

Q1. Gear box replacement work safely first and all ppes sure and paper work and try out checking and saving and job work clean and fresh and tackup up and clamping conveyer belt old gear box replacement for ne...read more
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Q2. Barring checking and replacement work and safety first and all ppes sure and paper work and try out sure and teckup up and clamping conveyer belt and plummer block top cover open Barring checking and remov...read more
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Q3. Conveyer belt pmi roller checking work and safety first and all ppes sure and paper work and walked away clean and fresh and Roller cut marking frem number and belt tracking and belt close and try out sure...read more
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Q4. Barring greasing work and safety first and all ppes sure and paper work and conveyer belt running and walked away clean and fresh and grease gun and greasing work
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Q5. Conveyer belt panching work and safety first and all ppes sure and paper work and try out same position and solution and hardner bad mixed mad belt panching work
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Q6. Conveyer belt chute replacement work and safety first and all ppes sure and paper work and try out and jobs walked away clean and fresh and same chute replace and tightening bolt and machine welding and fi...read more
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Q7. Conveyer belt v-scraper replacement work and safety first and all ppes sure and paper work belt close and try out and walked away from clean and fresh and same v -scraper making and replacement work
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Q8. Gear box old oil replacement work and safety first and all ppes sure and paper work and belt close and try out and walked away clean and fresh and oil gauge and checking and drain oil and Aw320 oil replac...read more
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Q9. Fluid coupling oil replacement work and safety first and all ppes sure and paper work and try out lockout and tagout (loto) safety procedure and fuse plug and open west oil remove and new aw46oil replacem...read more
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Q10. Drive pmi work and safety first and all ppes sure and paper work and try out ofter walked away clean and fresh and bass bolt nut tightening work
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Q11. Gear box cleaning work and safety first and all ppes sure and paper work and walked away clean and fresh and ty out sure and clean and fresh and same process paper work cancelled and conveyer belt running...read more
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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. Working principal of pump
Ans. 
Pumps work by creating a pressure difference to move fluid from one place to another.
• Pumps use mechanical energy to increase the pressure of a fluid and move it through a system

• They can be classified into different types such as centrifugal pumps, positive displacement pumps, etc.

• The working principle involves the conversion of mechanical energy into hydraulic energy

• Examples include water pumps in buildings, fuel pumps
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Q2. What is working principal of cooling tower
Ans. 
Cooling towers work on the principle of evaporative cooling to remove heat from a process or building.
• Cooling towers use water as a cooling medium to absorb heat from a process or building.

• The hot water is pumped to the top of the tower and distributed over the fill media.

• As the water flows over the fill media, some of it evaporates, taking away heat and cooling the rest of the water.

• The cooled water is then collected ...read more
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Q3. Pollution bag filter specifications
Ans. 
Pollution bag filter specifications include material type, filtration efficiency, airflow capacity, and pressure drop.
• Material type: Bag filters can be made of various materials such as polyester, polypropylene, or fiberglass.

• Filtration efficiency: This indicates the percentage of particles the filter can capture. Higher efficiency filters are more effective but may have higher pressure drops.

• Airflow capacity: The maxi...read more
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Q4. Softner water parameter
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Q5. What is the formula of centrifugal pump head
Ans. 
The formula for centrifugal pump head is H = (Q * SG) / (3.14 * D^2 * 2.31)
• Head (H) is calculated using the flow rate (Q), specific gravity (SG), and diameter of the impeller (D)

• The formula is derived from the basic equation for head in a centrifugal pump

• Example: H = (100 gpm * 1.0) / (3.14 * 0.5^2 * 2.31) = 45.75 ft
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Gear box replacement work

Q1. Barring checking and replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and blumber block top cover open and old slue Barring remove and new slue...read more
Ans. 
Blumber block top cover open and old slue Barring remove and new slue Barring replace and nut tightening sure and blumber block top cover fixed and bolts nut tightening sure and paper work cancelled and conveyer belt running ok
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Q2. Motor replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and bolts nut open and old motor remove and new motor replace and bolts nut tightening s...read more
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Bolt nut open and old motor remove and new motor replace and bolt nut tightening sure and Dayal gauge eliminate process ok and paper work cancelled and conveyer belt running ok
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Q3. V-scraper replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and bolts nut open and old v-scraper remove new v-scraper replace and bolts nut tigh...read more
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Q4. Discharge Chute replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and bolts nut open and old discharge chute remove and new discharge chute repl...read more
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Bolt nut open and old discharge chute remove and new discharge chute replace and bolts nut tightening sure and paper work cancelled and conveyer belt running ok
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Q5. Barring Greasing work and safety first and all ppes sure and paper work and all pulley checking and savings greasing sure and paper work cancelled
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Q6. Gear box replacement work and safety first and all ppes sure and paper work and try out and walked away clean and fresh and bolts nut open and old gear box remove and new gear box replace and bolts nut tig...read more
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Q1. Pump main tenec
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Q2. Machine maintenance
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Q1. Machanical work
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Q2. Crean maintenance
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Q1. What is Hydraulic system and it's components?
Ans. 
A hydraulic system uses fluid to transmit power and consists of components like pumps, cylinders, valves, and hoses.
• Hydraulic pump: generates flow to the hydraulic system

• Hydraulic cylinder: converts fluid power into mechanical power

• Hydraulic valve: controls the flow and pressure of the fluid

• Hydraulic hose: carries the fluid between components
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Q2. Explain steel making process?
Ans. 
Steel making process involves converting iron ore into steel through various stages like smelting, refining, and casting.
• Iron ore is mined and transported to a steel mill.

• The iron ore is smelted in a blast furnace to remove impurities and create molten iron.

• The molten iron is then refined in a basic oxygen furnace or an electric arc furnace to adjust the carbon content and other alloying elements.

• The refined molten iro...read more
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