JSW Energy Mechanical Maintenance Engineer Interview Questions, Process, and Tips

Q1. Rejection analysis
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Q2. Measurement system analysis
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Q1. Failure mode effects analysis
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Q2. Controlling mathod
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Q1. Statistics process control
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Q2. Instrument measurement
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Parshonality test me behaviour and nature, spiking etc

Q1. Field related questions
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Q2. Cell manufacturing process
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Q3. What is the S.O.P ?
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S.O.P stands for Standard Operating Procedure, which is a set of step-by-step instructions compiled by an organization to help workers carry out routine operations.
• S.O.P outlines the steps that employees should take to complete a specific task or process.

• It ensures consistency and quality in the performance of tasks.

• S.O.Ps are used in various industries such as manufacturing, healthcare, and food service.

• For example, i...read more
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Q4. What is the S.T.Q ?
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S.T.Q stands for Safety, Time, Quality - a framework used in production engineering to prioritize aspects of a project.
• Safety: Ensuring that all processes and equipment are safe for workers and the environment.

• Time: Managing the schedule and deadlines to ensure timely completion of projects.

• Quality: Maintaining high standards of quality in the production process and final products.

• Example: Prioritizing safety measures ...read more
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Q5. What is a batal proces
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A batal process is a term used in the oil and gas industry to describe a process where two fluids are mixed together to create a desired outcome.
• Batal processes are commonly used in drilling operations to create drilling mud with specific properties.

• The mixing of drilling mud involves combining water, clay, and other additives to achieve the desired viscosity and density.

• Batal processes can also be used in hydraulic fr...read more
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Q1. Technical question and objectives question
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Q1. Types of gearbox
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Types of gearboxes include spur, helical, bevel, worm, planetary, and cycloidal.
• Spur gearbox: simple and efficient, used in low-speed applications

• Helical gearbox: smoother operation, higher load capacity

• Bevel gearbox: used for right angle drives

• Worm gearbox: high reduction ratios, self-locking feature

• Planetary gearbox: compact design, high torque transmission

• Cycloidal gearbox: high shock load capacity, low backlash
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Q2. What is difference between tensioning and torqueing
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Tensioning involves stretching a fastener to a specific load, while torqueing involves tightening a fastener to a specific torque value.
• Tensioning is typically used for critical applications where precise load control is required.

• Torqueing is more commonly used in general applications where a specific torque value is sufficient.

• Tensioning is often used in applications like bolted joints in bridges or aircraft structure...read more
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Q3. What is the main reason of gearbox failure
Ans. 
The main reason for gearbox failure is lack of lubrication, leading to increased friction and wear.
• Lack of proper lubrication causing increased friction

• Contamination of lubricant with dirt or debris

• Overloading the gearbox beyond its capacity

• Improper maintenance and servicing

• Manufacturing defects or poor quality materials

• Incorrect alignment of gears
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Q4. Difference between two stroke and four stroke engine
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Two stroke engines have power strokes every revolution, while four stroke engines have power strokes every other revolution.
• Two stroke engines have a simpler design with fewer moving parts compared to four stroke engines

• Two stroke engines require a fuel-oil mixture for lubrication, while four stroke engines have a separate oil reservoir

• Two stroke engines produce more pollution due to incomplete combustion, while four s...read more
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Q5. How WTG generate electricity
Ans. 
Wind Turbine Generators (WTG) generate electricity through the conversion of wind energy into mechanical energy and then into electrical energy.
• Wind turns the blades of the turbine

• Blades are connected to a rotor

• Rotor spins a generator to produce electricity

• Electricity is then sent to a transformer for distribution

• Example: Vestas V164-9.5 MW wind turbine
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Q6. Why we use fluid coupling
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Fluid couplings are used to transmit power from one shaft to another without direct physical contact, allowing for smooth start-ups and overload protection.
• Fluid couplings help in gradual acceleration of heavy machinery, reducing stress on the equipment

• They provide overload protection by slipping when the torque exceeds a certain limit

• Fluid couplings dampen torsional vibrations, reducing wear and tear on the machinery

• T...read more
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Q7. Why gear box use
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Gear boxes are used to transmit power from one component to another while changing the speed and torque of the output.
• Gear boxes allow for speed and torque conversion between input and output shafts

• They provide mechanical advantage by increasing or decreasing speed and torque

• Used in various applications such as automobiles, industrial machinery, and power transmission systems
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Q8. Did you know about generator alignment
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Yes, generator alignment is crucial for efficient operation and preventing damage.
• Generator alignment ensures that the rotating parts are properly positioned to prevent vibration and wear

• Improper alignment can lead to increased maintenance costs and reduced efficiency

• Alignment methods include laser alignment, dial indicators, and alignment jigs

• Regular alignment checks should be performed to ensure optimal performance

• Ex...read more
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Q9. Which gear is used in gearbox
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Various types of gears can be used in a gearbox depending on the application, such as spur gears, helical gears, bevel gears, and worm gears.
• Spur gears are commonly used in applications where simplicity and cost-effectiveness are important.

• Helical gears are used when smooth and quiet operation is required.

• Bevel gears are used to transmit motion between intersecting shafts.

• Worm gears are used for high reduction ratios a...read more
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Q10. Why aviation lamp is use in wtg
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Aviation lamps are used in wind turbine generators (WTG) for aircraft safety and navigation purposes.
• Aviation lamps help to make the wind turbine visible to aircrafts, reducing the risk of collisions.

• They also aid in navigation by marking the location of the wind turbine for pilots.

• The use of aviation lamps is a regulatory requirement to ensure air traffic safety around wind turbines.

• Different colors of aviation lamps ...read more
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Q1. Present working in knowledge me
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Q1. Salary discussion and background
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