National Fertilizers Graduate Apprenticeship Trainee Interview Questions and Answers

Q1. Technical questions
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Q2. Grade of transformer oil
Ans. 
Transformer oil is graded based on its dielectric strength and viscosity.
• Transformer oil is graded based on its dielectric strength, which indicates its ability to insulate and protect the transformer from electrical breakdown.

• The viscosity of transformer oil is also an important factor in determining its grade, as it affects the flow and lubrication properties of the oil.

• Common grades of transformer oil include minera...read more
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Q1. Technic questions Heat transfer opretion Over all heat transfer coefficient
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Q2. Technical questions Heat transfer opretion
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Q1. Technical questions Mass transfer opretion
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General

Q1. What is relative volatility
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Relative volatility is a measure of how easily a component in a mixture can be separated from other components through distillation.
• Relative volatility is calculated as the ratio of the vapor pressures of the two components being separated.

• It is used in distillation processes to determine the efficiency of separation.

• Higher relative volatility indicates easier separation of components.

• For example, in the separation of ...read more
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Q1. What is Distillation
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Distillation is a process of separating components of a liquid mixture based on differences in boiling points.
• Distillation involves heating the liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form.

• The components with lower boiling points will vaporize first and be collected, while the components with higher boiling points will remain in liquid form.

• Examples of distillation include...read more
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Q2. Difference absorber Column and strippers column
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Absorber column absorbs a gas into a liquid, while a stripper column removes a component from a liquid.
• Absorber column is used to absorb a gas into a liquid, while a stripper column is used to remove a component from a liquid.

• Absorber column operates at a higher pressure than the stripper column.

• Absorber column is used in processes like gas sweetening, while stripper column is used in processes like solvent recovery.

• Ex...read more
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Q1. What is compressor and it's types
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A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.
• Types of compressors include reciprocating, rotary screw, centrifugal, and scroll compressors

• Reciprocating compressors use pistons to compress gas

• Rotary screw compressors use two rotating screws to compress gas

• Centrifugal compressors use a rotating impeller to create high-velocity gas flow

• Scroll compressors use two interleav
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Q2. SAP HANA S4 T codes
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Q1. What's your strength
Ans. My strength is hard work and my good behavior
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Q2. Full form of pasav and what is its function
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PASAV stands for Pressure Actuated Safety and Automatic Valve. It is used to control the flow of fluids in a system based on pressure levels.
• PASAV is a type of valve used in mechanical systems.

• It automatically opens or closes based on the pressure levels in the system.

• PASAV helps in maintaining safe pressure levels in the system to prevent damage or accidents.

• Example: PASAVs are commonly used in hydraulic systems to re
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Q3. Sir psv full form is pressure safety valve is work in safety pressure
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Q4. How to work in open spanner
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To work in open spanner, place the spanner on the nut or bolt and turn it in the desired direction.
• Select the correct size of open spanner for the nut or bolt

• Place the open end of the spanner on the nut or bolt

• Turn the spanner in the desired direction to loosen or tighten the nut or bolt

• Ensure the spanner is securely placed on the nut or bolt to avoid slipping
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Q5. Types of welding
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Types of welding include MIG, TIG, stick, and flux-cored welding.
• MIG welding uses a wire electrode and shielding gas to create a strong bond.

• TIG welding uses a tungsten electrode and inert gas for precise and clean welds.

• Stick welding uses a consumable electrode coated in flux to create a strong bond.

• Flux-cored welding uses a tubular wire filled with flux for outdoor and windy conditions.
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Q6. What company have you worked in before
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Q1. Explain your job profile
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