SRF Engineer Trainee Interview Questions and Answers

Technical and aptitude based questions were asked

GD was conducted with a group of 7 members

Q1. What is corrosion in brief
Ans. 
Corrosion is the process of deterioration of a material due to chemical reactions with its environment.
• Corrosion occurs when a material reacts with substances in its environment, such as oxygen or moisture.

• It can lead to the degradation of the material's physical and chemical properties.

• Common examples of corrosion include rusting of iron and tarnishing of silver.

• Corrosion can weaken structures, reduce the lifespan of ...read more
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General aptitude questikns

Q1. MCQ questions on welding, plant layout designs, EOQ, EAD
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Domain based questions and basic aptitude question

Q1. About distillation column, basic questions ,cooling tower concept.
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Q2. Difference between CSTR and PFR, Pumps ,Heat Exchanger.
Ans. 
CSTR and PFR are types of reactors, pumps are used to move fluids, heat exchangers transfer heat between fluids.
• CSTR (Continuous Stirred Tank Reactor) has a constant volume and operates under steady-state conditions.

• PFR (Plug Flow Reactor) has a varying volume and operates under unsteady-state conditions.

• Pumps are mechanical devices used to move fluids from one place to another, like centrifugal pumps or positive displ...read more
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Q3. What is cracking
Ans. 
Cracking is a process in which complex hydrocarbon molecules are broken down into simpler molecules.
• Cracking is a refining process used to convert large hydrocarbon molecules into smaller, more valuable ones.

• It is done by breaking the carbon-carbon bonds in the molecules.

• Examples include catalytic cracking and steam cracking.
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Q4. What is Reforming
Ans. 
Reforming is a process used in the petroleum industry to convert low-octane naphtha into high-octane gasoline.
• Reforming involves rearranging the molecular structure of hydrocarbons to increase their octane rating.

• It is typically done using a catalyst at high temperatures and pressures.

• The process can also produce hydrogen gas as a byproduct.

• Reforming is an important step in the production of gasoline and other fuels in...read more
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Q5. What is range and approach of cooling tower
Ans. 
The range of a cooling tower refers to the maximum distance at which it can effectively cool air, while the approach is the temperature difference between the cooled water and the entering air.
• Range of a cooling tower is typically around 5-20 degrees Fahrenheit

• Approach of a cooling tower is usually around 8-15 degrees Fahrenheit

• The range and approach of a cooling tower can vary based on factors such as design, size, an
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Q1. What is LMTD and its uses
Ans. 
LMTD stands for Log Mean Temperature Difference. It is used in heat exchanger design to calculate the average temperature difference between hot and cold fluids.
• LMTD is used to determine the overall heat transfer coefficient in a heat exchanger.

• It is calculated using the formula: LMTD = (ΔT1 - ΔT2) / ln(ΔT1 / ΔT2)

• LMTD helps in determining the required heat transfer area for a given heat exchanger design.

• It is important...read more
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Q2. What is distillation and types of diatillation
Ans. 
Distillation is a process of separating components of a liquid mixture based on their boiling points.
• Distillation involves heating a liquid mixture to create vapor, then cooling the vapor to collect the separated components.

• Types of distillation include simple distillation, fractional distillation, and steam distillation.

• Simple distillation is used to separate components with significantly different boiling points, whi...read more
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Q3. How to lineup pump
Ans. 
To lineup a pump, ensure proper alignment of pump shaft with motor shaft and secure with coupling.
• Check alignment of pump shaft and motor shaft

• Use alignment tools like dial indicators to ensure accuracy

• Secure alignment by adjusting motor position or shimming as needed

• Install and tighten coupling to connect pump and motor shafts
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Q4. How to lineup ejector
Ans. 
To lineup an ejector, ensure proper alignment of components and connections for efficient operation.
• Ensure all components are properly aligned according to manufacturer's specifications

• Check for any obstructions or misalignments that may affect performance

• Verify connections are secure and properly fitted to prevent leaks

• Use alignment tools such as laser alignment systems for precision

• Perform regular maintenance to ensu
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Q5. Howto lineup hear exchanger
Ans. 
To line up a heat exchanger, ensure proper alignment of inlet and outlet connections, support structures, and gaskets.
• Ensure the inlet and outlet connections of the heat exchanger are properly aligned with the piping system.

• Check that the support structures are in place and aligned correctly to bear the weight of the heat exchanger.

• Verify that gaskets are installed correctly and in good condition to prevent leaks.

• Use a...read more
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