Chemplast Sanmar 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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Q1. Basics of maintenance
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Q2. What types of pumps you have used in previous company?
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Q3. What are different types of reactor?
Ans. 
Different types of reactors include batch reactors, continuous stirred tank reactors, plug flow reactors, and fluidized bed reactors.
• Batch reactors: Used for small-scale production or research purposes.

• Continuous stirred tank reactors: Commonly used in chemical and biochemical industries.

• Plug flow reactors: Ideal for reactions with high conversion rates and minimal side reactions.

• Fluidized bed reactors: Suitable for re...read more
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Q4. What is Vaccum and which vaccum pump you have used?
Ans. 
A vacuum is a space devoid of matter. I have used a rotary vane vacuum pump.
• A vacuum is a region with no particles or gas molecules.

• It is created by removing air or other gases from a sealed container.

• Vacuum pumps are used to create and maintain a vacuum.

• I have used a rotary vane vacuum pump, which uses rotating vanes to create a vacuum.

• This type of pump is commonly used in various applications, such as in HVAC systems
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Q5. Which Ejector types system do you have used?
Ans. 
I have used the Single-stage ejector system and the Multi-stage ejector system.
• Single-stage ejector system: This system uses a single ejector stage to create a vacuum or low-pressure environment. It is commonly used in applications such as vacuum cleaners and air conditioning systems.

• Multi-stage ejector system: This system uses multiple ejector stages in series to achieve higher levels of vacuum or lower pressures. It ...read more
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Written test of Core subjects

Q1. Introduction, Internship,Aim
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Q1. Dream , Resume ,Project , Motive
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Management study skill development progress program.

Q1. Hr management about this faculty was very clearly and not one number or skill products or party seller
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Q2. Travels seller products addition management security hr or system
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Q3. About this conditions roll or human resources company management
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Q4. Security lock sweeper
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Q5. Engineer security level or lock faculty system
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Q6. Humbled flexible strike advisor company sellers
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Q1. Why did you leave your last job?
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Q2. Provide me all documents needed
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Q3. What was your last package? Provide salary slip and joining letter.
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Q1. Where did you work lastly
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Q2. Why did you leave last company
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Q3. What was your role
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Q4. Tell equipments u handled.
Ans. 
I have handled various equipment including pumps, compressors, turbines, and conveyors.
• Pumps: I have experience in maintaining and troubleshooting centrifugal pumps used in industrial processes.

• Compressors: I have worked with reciprocating and rotary compressors used for air and gas compression.

• Turbines: I have dealt with steam turbines used in power generation and gas turbines used in various applications.

• Conveyors: I...read more
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Q5. What is vacuum drop permissible for reactor vacuum testing?
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The permissible vacuum drop for reactor vacuum testing depends on various factors such as the type of reactor and its design specifications.
• The permissible vacuum drop can vary depending on the type of reactor being tested.

• For some reactors, a vacuum drop of 5-10% may be considered acceptable.

• In other cases, a vacuum drop of less than 2% may be required.

• The specific permissible vacuum drop should be determined based on...read more
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Q6. How will you check for pump alignment?
Ans. 
To check for pump alignment, use laser alignment tools and follow a step-by-step process.
• Use laser alignment tools to measure and correct misalignment

• Start by checking the pump and motor shafts for parallelism and angularity

• Measure the offset and angular misalignment using the laser alignment tool

• Adjust the pump and motor positions to achieve proper alignment

• Recheck the alignment after adjustments and make necessary co...read more
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Q7. What is temperature of cooling tower water temp?
Ans. 
The temperature of cooling tower water varies depending on the specific system and operating conditions.
• The temperature of cooling tower water is typically maintained within a specific range to ensure efficient cooling.

• Factors such as ambient temperature, heat load, and water flow rate can influence the cooling tower water temperature.

• Cooling tower water temperature can be measured using temperature sensors or thermome...read more
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Q8. What is unit of pressure?
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The unit of pressure is the pascal (Pa).
• The pascal is defined as one newton per square meter (N/m²).

• Other common units of pressure include pounds per square inch (psi) and atmospheres (atm).

• Pressure can also be measured in millimeters of mercury (mmHg) or torr.

• In engineering, pressure is often expressed in kilopascals (kPa) or megapascals (MPa).
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Q9. What is ph range?
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pH range refers to the scale that measures the acidity or alkalinity of a substance.
• pH range is a scale from 0 to 14.

• A pH value of 7 is considered neutral.

• Values below 7 indicate acidity, with lower values being more acidic.

• Values above 7 indicate alkalinity, with higher values being more alkaline.

• For example, lemon juice has a pH range of 2-3, making it highly acidic.

• Baking soda has a pH range of 8-9, making it slight
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Logical reasoning, quant, verbal