Holcim Mechanical Engineer Interview Questions and Answers

Q1. What are the steps to dismantle turbine?
Ans. 
The steps to dismantle a turbine involve shutting down the system, disconnecting power sources, removing external components, disassembling internal parts, and safely disposing of any hazardous materials.
• Shut down the turbine system and ensure it is completely powered off.

• Disconnect all power sources to prevent any accidents during dismantling.

• Remove any external components such as casing, covers, and piping.

• Disassembl...read more
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Q1. About crusher type model, make general maintenance About compressor, water pump. About raw mill model, make & general maintenance schedule
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Q1. Basics mechanical question
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Q2. What is a thermodynamics
Ans. 
Thermodynamics is the branch of physics that deals with the relationships between heat and other forms of energy.
• Thermodynamics studies the transfer of energy in the form of heat and work.

• It involves concepts like entropy, temperature, and energy conversion.

• Examples include the efficiency of engines, refrigeration systems, and phase transitions in materials.
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Q3. Third law of motion
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The third law of motion states that for every action, there is an equal and opposite reaction.
• States that when one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object

• The forces always occur in pairs

• Examples include a rocket pushing against the ground to lift off, or a person pushing against a wall
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Q4. Types of bearing
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Types of bearings include ball bearings, roller bearings, plain bearings, and fluid bearings.
• Ball bearings: use balls to reduce friction between two surfaces

• Roller bearings: use cylindrical rollers to reduce friction

• Plain bearings: have a simple surface with no moving parts

• Fluid bearings: use a thin layer of liquid or gas to reduce friction
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On maths and logical reasoning MCQ based questions being asked

Q1. Basic details of yourself
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Q2. Mental skills of candidates being check
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Q1. Pump and motor allignment various processes
Ans. 
Proper alignment of pumps and motors is crucial for efficient operation and preventing damage.
• Ensure the pump and motor shafts are parallel and at the same height to prevent misalignment.

• Use alignment tools such as dial indicators or laser alignment systems for precision.

• Regularly check and adjust alignment to prevent wear and tear on components.

• Improper alignment can lead to increased energy consumption, vibration, an...read more
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Q2. Details about fume extraction system and Dense phase conveying system being asked
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Q3. Difference between pump and compressor
Ans. 
Pump moves liquid from one place to another, while compressor compresses gas to increase pressure.
• Pump is used to move liquids, while compressor is used to increase pressure of gases.

• Pump operates at lower pressure, while compressor operates at higher pressure.

• Examples of pumps include water pumps in cars, while examples of compressors include air compressors in HVAC systems.
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Q1. Ask about planning of work. quietly of structure.
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Tell me about yourself.
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Q4. Why are you looking for a change?
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Q1. What type of pums used in cooler
Ans. 
Centrifugal pumps are commonly used in coolers for circulating the coolant fluid.
• Centrifugal pumps are commonly used in coolers for their ability to efficiently circulate fluids.

• Other types of pumps like diaphragm pumps or piston pumps may also be used in coolers depending on the specific application.

• The pump used in a cooler should be selected based on factors like flow rate, pressure requirements, and fluid compatibi...read more
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Q1. Conveyor AGV and robotics
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Q1. Tell us abt yourself
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Q2. Majority experience in field
Ans. 
I have 5 years of experience in the mechanical engineering field.
• Worked as a mechanical engineer for 5 years

• Experience in designing and testing mechanical systems

• Proficient in CAD software such as SolidWorks and AutoCAD

• Familiar with industry standards and regulations

• Collaborated with cross-functional teams to complete projects
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