B5 Plus Mechanical Maintenance Engineer Interview Questions and Answers

Most of the questions were from technical section.

Q1. #About my family #Place from which I belongs to #About job experience. # Tecnical question . #Safety .
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Q1. Schematic diagram for a 4HI AGC MILL
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A 4HI AGC mill features four rolls and automatic gauge control for precise thickness in metal rolling processes.
• Four-High Configuration: The mill consists of two smaller rolls (work rolls) and two larger rolls (back-up rolls) to support the work rolls.

• Automatic Gauge Control (AGC): This system automatically adjusts the roll gap to maintain the desired thickness of the material being processed.

• Enhanced Control: AGC syst...read more
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Q2. Working of ammonia cracker
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An ammonia cracker is a device that decomposes ammonia into hydrogen and nitrogen gases for various applications.
• Ammonia cracking involves heating ammonia (NH3) to high temperatures (around 700-1000°C).

• The process typically uses a catalyst, such as nickel, to facilitate the reaction.

• The reaction can be represented as: 2 NH3 → N2 + 3 H2.

• Cracked ammonia is used in hydrogen production for fuel cells and industrial process...read more
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Q1. Working principal of pump
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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...read more
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Q2. What is working principal of cooling tower
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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
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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
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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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Q1. What kind of hydraulic breakdown you faces
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I have faced various hydraulic breakdowns in my career as a Mechanical Maintenance Engineer.
• One common hydraulic breakdown is a leak in the hydraulic system, which can be caused by worn-out seals or damaged hoses.

• Another issue is a hydraulic pump failure, which can occur due to excessive wear and tear or lack of proper maintenance.

• Clogged or blocked hydraulic filters can also lead to breakdowns, as they restrict the fl...read more
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Q2. What is difference between hydraulic and pneumatic system
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Hydraulic systems use liquid to transmit power, while pneumatic systems use compressed air.
• Hydraulic systems use incompressible fluids like oil or water, while pneumatic systems use compressed air or gas.

• Hydraulic systems can generate higher forces and are used in heavy machinery like cranes and excavators.

• Pneumatic systems are lighter and more flexible, commonly used in applications like air brakes in vehicles.

• Hydraul...read more
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Q1. Machine maintenance
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Q2. Quality cheak upon
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Q3. Measurements machine component
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Q1. What is safety, What is Hazards.
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Safety refers to measures taken to prevent accidents and injuries, while hazards are potential sources of harm or danger.
• Safety involves implementing protocols and procedures to minimize risks in the workplace

• Hazards are factors or situations that have the potential to cause harm

• Examples of hazards include electrical hazards, chemical hazards, and ergonomic hazards

• Safety measures may include training employees on prope...read more
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Q2. What is predictive maintenance.
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Predictive maintenance is a proactive maintenance strategy that uses data analysis to predict when equipment failure is likely to occur.
• Uses data analysis to predict when equipment failure is likely to occur

• Helps in scheduling maintenance activities before a breakdown occurs

• Reduces downtime and increases equipment reliability

• Examples include vibration analysis, oil analysis, and thermography
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Q1. Basic questions
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Q2. What is your name
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Q3. Total experience
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Q4. Are u interested
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Q5. What is preventive maintenance
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Preventive maintenance is a proactive approach to maintenance that involves regularly inspecting, servicing, and repairing equipment to prevent breakdowns and extend its lifespan.
• Preventive maintenance involves scheduled inspections and maintenance tasks.

• It aims to identify and address potential issues before they cause equipment failure.

• Examples of preventive maintenance include lubricating moving parts, replacing wor...read more
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