National Fertilizers Chief Mechanical Maintenance Manager Interview Questions and Answers

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Q1. What to mechanical engineer
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Q2. Maintenance Engineer
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Q3. What do you pump
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Q4. Basie water passing pump
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Q5. What this stem line
Ans. 
The stem line refers to the main line of a plant or tree from which branches grow.
• The stem line provides structural support for the plant or tree.

• It transports water and nutrients from the roots to the rest of the plant.

• The stem line also contains vascular tissues like xylem and phloem.

• Examples: The stem line of a tree is the central trunk from which branches extend. In a flower, the stem line is the main stalk support
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Q6. Passing this pump
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Q7. What do you ahu
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Q1. Why Did You Choose a Mechanical Engineering Diploma?
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Q2. New what this change company
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Q3. What Is the Role of a Diploma Mechanical Engineer?
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Diploma mechanical engineers are responsible for designing, developing, and testing mechanical devices and systems.
• Designing mechanical components and systems

• Developing prototypes and conducting tests

• Collaborating with other engineers and professionals

• Ensuring compliance with industry standards and regulations

• Troubleshooting and resolving mechanical issues
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Q4. What Are the Practical Interview Questions for Mechanical Engineering?
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Q5. Interview Advice for Entry-Level Mechanical Engineer Jobs?
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Q6. Engineer security level or lock faculty system
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Q1. M.Tech Project Details (Thermal performances analysis of parabolic solar collector.
Ans. 
Analyzed thermal performance of parabolic solar collector for M.Tech project
• Researched various materials for collector construction

• Conducted experiments to measure heat transfer efficiency

• Analyzed data to optimize collector design

• Compared results with theoretical models

• Presented findings in a detailed report
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Q2. Energy Management of Plant.
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Energy management of a plant involves optimizing energy usage to reduce costs and environmental impact.
• Implementing energy-efficient technologies and practices

• Monitoring energy consumption and identifying areas for improvement

• Utilizing renewable energy sources where possible

• Regular maintenance of equipment to ensure optimal performance

• Training staff on energy conservation practices
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Q3. General Question about pump.
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Q1. What is vekumpump and work ?
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Q2. What is Pump tipe and working
Ans. 
Pumps are devices used to move fluids (liquids or gases) by mechanical action.
• Pumps come in various types such as centrifugal pumps, reciprocating pumps, and rotary pumps.

• They work by creating a flow of fluid through the pump which increases the pressure of the fluid.

• Pumps are commonly used in industries for transferring liquids, such as water pumps in irrigation systems or fuel pumps in vehicles.
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Q1. How many types of gear used in market
Ans. 
There are several types of gears used in the market.
• Spur gears

• Helical gears

• Bevel gears

• Worm gears

• Planetary gears

• Rack and pinion gears

• Internal gears

• Miter gears

• Spiral bevel gears

• Hypoid gears
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Q2. How many types of material
Ans. 
There are numerous types of materials, including metals, polymers, ceramics, composites, and more.
• Metals: iron, aluminum, copper, etc.

• Polymers: plastics, rubber, etc.

• Ceramics: glass, porcelain, etc.

• Composites: fiberglass, carbon fiber, etc.

• Other: wood, concrete, etc.
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Q3. How may types of bolts
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There are several types of bolts, including hex bolts, carriage bolts, and lag bolts.
• Hex bolts have a hexagonal head and are commonly used in construction.

• Carriage bolts have a smooth, rounded head and are often used in woodworking.

• Lag bolts have a pointed tip and are used to attach heavy objects to wood or other materials.

• Other types of bolts include eye bolts, U-bolts, and J-bolts.
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Q1. Last company you worked in?
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Q2. Why you left last job?
Ans. In recession period i lost my job. My company was facing financial crises from last 6 months and finally they given lay off to 41 emoloyees in single day.
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Q3. Are you ready to relocate or daily updown fir job?
Ans. Yes i will. If possible i will do updown whichever will be better from these two.
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Q4. What are your salary expectations?
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Q5. As per company policy and my experience.
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Q6. Where are you currently located?
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Q1. Tell me about yourself.
Ans. I done it in marathi. Name, experience, education and currently going upskilling courses and my family background. (I think he was not ready to listen or take interview as he kept his camera off in googlelive interaction and asked me to make my camera on. )
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Q2. What equipments are you handled?
Ans. 
I have handled a wide range of equipment in my role as a Mechanical Maintenance Engineer.
• Pumps and compressors

• Conveyors and material handling equipment

• Boilers and heat exchangers

• HVAC systems

• Generators and power distribution systems

• Machine tools and production equipment

• Hydraulic and pneumatic systems

• Crane and lifting equipment

• Instrumentation and control systems
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Q3. Why did you leave your last company?
Ans. Company was going through financial crises and given 41 employees lay off at that time. (Please mention recession period instead of saying above. As he want to listen only & only corporate world technical words)
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Q4. Why your performance was not good?
Ans. I once again replied with same companies financial crises situation from last six months.
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Q5. How many employees from department got lay off?
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Q6. I replied with 3 out of 6 including our manager.
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Q7. What was product of your last company?
Ans. I replied with intermediate pharmaceutical , nucleoside, speciality chemical and petroleum products. (He manager was intersted in pharmaceutical exp only)
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Q8. If i opened centrifugal pump tell?
Ans. 
When opening a centrifugal pump, it is important to follow proper procedures to ensure safety and prevent damage.
• Before opening the pump, ensure that it is isolated from the power source and all pressure has been relieved.

• Inspect the pump for any signs of damage or wear, such as leaks, cracks, or excessive vibration.

• Check the pump's impeller and casing for any debris or blockages that may affect its performance.

• If nece...read more
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Q9. How the vacuum created in steam ejector?
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Vacuum is created in a steam ejector through the principle of jet propulsion.
• Steam ejectors use high-pressure steam to create a low-pressure environment.

• The steam enters the nozzle of the ejector and expands, creating a high-velocity jet.

• This high-velocity jet entrains and compresses the surrounding gas or vapor, reducing its pressure.

• The entrained gas or vapor is then discharged through the diffuser, creating a vacuum...read more
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Q10. Due to high steam from ventury the cycloids is created in entering area in very quick time so creating vacuum. (Don't tell "keep it short and simple" Pattern. Tell in theory way in velocity and pressure ...read more
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Q11. 1 torr=? Mmof hg
Ans. 
1 torr is equal to 0.03937 mm of Hg.
• 1 torr is a unit of pressure equal to 1/760th of standard atmospheric pressure.

• mm of Hg is a unit of pressure commonly used in vacuum systems.

• To convert torr to mm of Hg, multiply by 0.03937.

• Example: 1 torr = 1 * 0.03937 mm of Hg = 0.03937 mm of Hg.
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Q12. 759 mm of hg
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759 mm of hg is a unit of pressure measurement.
• mm of hg is a common unit used to measure pressure.

• 759 mm of hg is equivalent to 1012.8 millibars or 14.1 pounds per square inch (psi).

• It is often used in meteorology to measure atmospheric pressure.

• In mechanical maintenance, it can be used to monitor pressure in systems or equipment.

• For example, if a pressure gauge reads 759 mm of hg, it indicates the pressure exerted by
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Q1. Tell me about parameters you observed in clean room area.
Ans. 
In a clean room area, parameters observed include air quality, temperature, humidity, particle count, and pressure differentials.
• Air quality is monitored to ensure low levels of contaminants.

• Temperature is controlled to maintain a stable environment for sensitive equipment.

• Humidity levels are regulated to prevent moisture-related issues.

• Particle count is measured to ensure cleanliness and prevent contamination.

• Pressure...read more
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Q2. TELL ME ABOUTE AHU
Ans. It is Air handling unit used for providing specific or required condition in clean room area for that filters of 10,5 & 0.5 micron installed. It is consisting of cooling and heating lined over which filtered air is allowed to pass through damper system.
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Q3. Tell me mechanical seal types.
Ans. 
Mechanical seal types include cartridge seals, component seals, and bellows seals.
• Cartridge seals are pre-assembled units that are easy to install and replace.

• Component seals are made up of separate rotating and stationary parts.

• Bellows seals use a flexible metal bellows to provide a dynamic seal.
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