Vishnu Chemicals Junior Engineer Electrical Interview Questions and Answers

Online test on technical and aptitude with maths

Q1. Your favorite subject
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Q2. What have you learned in your training
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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
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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
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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
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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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Very easy question but time is not more.

1st Introduction.
2nd Project
3rd Favourite Subject
4th Technical Questions
5th General knowledge
6th Hr round

I am selected in 1st round ,so 2nd time Interview for Technical + Hr

1st aptitude followed by psychometric test .

Q1. 1. How you will select a heat exchanger for different type of fluids.
Ans. 
The selection of a heat exchanger for different fluids depends on factors such as fluid properties, flow rates, and heat transfer requirements.
• Identify the properties of the fluids such as viscosity, density, and thermal conductivity.

• Determine the flow rates and pressure drops of the fluids.

• Select the appropriate type of heat exchanger such as shell and tube, plate and frame, or spiral.

• Consider the heat transfer requir...read more
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Q2. What Is reflux ratio.
Ans. 
Reflux ratio is the ratio of the amount of liquid refluxed to the amount of liquid that is being distilled.
• It is an important parameter in distillation processes.

• It helps in determining the efficiency of the distillation column.

• A high reflux ratio results in a higher purity of the distillate.

• Reflux ratio can be adjusted to optimize the distillation process.

• It is calculated as the ratio of the reflux flow rate to the di
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10 people in one group, topic drone technology

Q1. Modes of Heat transfer
Ans. 
Modes of heat transfer include conduction, convection, and radiation.
• Conduction is the transfer of heat through a material without any movement of the material itself.

• Convection is the transfer of heat through the movement of fluids, such as air or water.

• Radiation is the transfer of heat through electromagnetic waves, such as the heat from the sun.

• Examples of conduction include touching a hot stove or holding a cold dr...read more
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Q2. Design of distillation coloumn
Ans. 
Design of distillation column involves determining the number of trays, column diameter, and feed location.
• The number of trays is determined by the separation required and the reflux ratio.

• Column diameter is determined by the vapor and liquid flow rates.

• Feed location is determined by the composition of the feed and the desired product purity.

• Other factors to consider include pressure drop, heat transfer, and material s...read more
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Q1. If we send you to Jammu will you work
Ans. 
Yes, I am willing to work in Jammu.
• I am open to working in any location assigned to me

• I am adaptable and can adjust to new environments

• I am excited to explore new places and cultures

• I have worked in different cities before and have had positive experiences
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Q2. Tell us more about yourself
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Good performance & technical answer

Q1. What is Pump Whay required pump
Ans. 
Pump Whay is a required pump for a specific application.
• Pump Whay is likely a typo and should be corrected to 'Pump What'.

• The required pump depends on the specific application and its requirements.

• Examples of pump types include centrifugal pumps, diaphragm pumps, and gear pumps.
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Q2. What is sop & standard ruals
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SOP stands for Standard Operating Procedure, which are established procedures to ensure consistency and quality in operations. Standard rules are guidelines that must be followed.
• SOPs are detailed step-by-step instructions on how to perform a specific task or operation.

• Standard rules are general guidelines or regulations that must be followed in a particular setting.

• SOPs help in maintaining consistency, quality, and ef...read more
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