Pidilite Industries Mechanical Engineer Interview Questions and Answers

Q1. Which pipe line used in Huzardous chemicals?
Ans. 
Stainless steel pipelines are commonly used for transporting hazardous chemicals due to their corrosion resistance and durability.
• Stainless steel pipelines are preferred for their resistance to corrosion from hazardous chemicals.

• PVC pipelines are not suitable for hazardous chemicals as they can degrade and leak.

• Carbon steel pipelines can be used for some hazardous chemicals, but may require additional coatings or linin...read more
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Q2. How to calculate the steam of boiler?
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To calculate the steam of a boiler, you need to know the boiler's efficiency, steam flow rate, and specific enthalpy of steam.
• Calculate the energy input by multiplying the mass flow rate of steam by the specific enthalpy of steam.

• Determine the energy output by dividing the energy input by the boiler's efficiency.

• The steam flow rate can be measured using a flow meter, and the specific enthalpy of steam can be obtained f...read more
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Q3. Draw the module of coal fired hot air generator
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The module of a coal fired hot air generator typically includes a combustion chamber, heat exchanger, fan, and exhaust system.
• Combustion chamber where coal is burned to produce heat

• Heat exchanger to transfer heat from combustion gases to the air

• Fan to circulate the heated air

• Exhaust system to remove combustion byproducts
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Q1. Why do you want to change the company?
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Q2. Are you ready to relocate?
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Logical reasoning, quant, verbal

Q1. Share details of your previous job.
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Q2. What are your strengths and weaknesses?
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Q3. Tell me about yourself.
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Q1. What Is GMAW ?
Ans. 
GMAW stands for Gas Metal Arc Welding, a welding process that uses a continuous solid wire electrode and shielding gas to create a weld.
• Uses a continuous solid wire electrode

• Requires a shielding gas to protect the weld from atmospheric contamination

• Commonly used in industries like automotive, construction, and manufacturing
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Q2. What are different between MIG & MAG ?
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MIG stands for Metal Inert Gas welding, while MAG stands for Metal Active Gas welding. The main difference lies in the type of shielding gas used.
• MIG welding uses inert gases like argon or helium to shield the weld pool from atmospheric contamination, while MAG welding uses active gases like carbon dioxide or a mixture of gases.

• MIG welding is typically used for non-ferrous metals like aluminum, while MAG welding is mor...read more
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Q3. What is WPS Procee ?
Ans. 
WPS Procee is a welding procedure specification that outlines the details of a specific welding process.
• WPS Procee includes information such as welding materials, welding parameters, preheat and post-weld heat treatment requirements.

• It is essential for ensuring consistency and quality in welding operations.

• WPS Procee is often required in industries such as construction, manufacturing, and oil & gas.

• Example: A WPS Proce...read more
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Q4. What is PQR Process ?
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PQR Process is a procedure used in welding to qualify the welding procedure specification.
• PQR stands for Procedure Qualification Record.

• It involves testing and documenting the variables used during the welding process.

• The purpose is to ensure that the welding procedure will produce the desired quality of welds.

• PQR Process is essential for ensuring the integrity and strength of welded joints.

• Examples of variables tested...read more
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Q1. Tell about yourself.
Ans. 
Experienced Senior Engineer with a strong background in software development and project management.
• Over 10 years of experience in software engineering

• Proficient in multiple programming languages such as Java, Python, and C++

• Led successful projects from conception to completion, resulting in increased efficiency and cost savings

• Strong problem-solving skills and ability to work well in a team environment
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Q2. Why you want to switch your job .
Ans. 
Seeking new challenges and opportunities for growth.
• Looking for a new environment to learn and develop new skills.

• Interested in working on different projects to broaden my experience.

• Seeking a company with better career advancement opportunities.

• Want to explore new technologies and methodologies in the industry.
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Q1. Online examination with 60 Technical questions in 60 minutes
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Online examination of 30 questions in 30 minutes

Online examination of 30 questions in 30 minutes

Q1. Personal details, background, work experience, Strengths & weakness
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Q1. Basics of instrumentation, control system, field instrumentation, job role
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Q1. Overall plant proceess, job role, manpower handling and budget
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Q1. Family background and reason for chamge
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Q1. Tell me about your self
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Q2. Asking about caustic process some of
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Q3. Centrifuge pump working, and power and capacity calculations
Ans. 
Centrifuge pump power and capacity calculations involve understanding the pump's efficiency, flow rate, and head.
• Calculate the pump's power using the formula: Power (kW) = (Q x H x SG) / (3.6 x η)

• Determine the pump's capacity by calculating the flow rate (Q) in m^3/s

• Consider the pump's head (H) in meters and specific gravity (SG) of the fluid being pumped

• Efficiency (η) of the pump is crucial for accurate power calculat...read more
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Q4. Liquid ring compressor working
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A liquid ring compressor is a type of rotary positive displacement pump that uses a liquid seal to create compression.
• Uses a rotating impeller with blades to compress gas by creating a liquid ring around the impeller

• The liquid ring acts as a seal and helps in compression of gas

• Commonly used in applications where a continuous flow of gas with low pressure is required, such as in vacuum systems or wastewater treatment pl
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Q5. Hydrogen compressor preventive maintenance
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Q1. Provide pervious salary
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Q2. Where r u living? Location
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Q3. Notice period joining process
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Q1. For job seekers, key advice includes: tailoring your resume to each job application, actively networking, researching companies thoroughly before applying, practicing interview skills, following up with po...read more
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Q1. For job seekers, key advice includes: tailoring your resume to each job application, actively networking, researching companies thoroughly before applying, practicing interview skills, following up with po...read more
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