Shiva Pharmachem DCS Operator Interview Questions and Answers

The raw material in bifenthrin is a synthetic pyrethroid insecticide.

• Bifenthrin is synthesized from various chemical compounds.

• It is commonly derived from the reaction between 2-methyl-3-bromobenzyl cyanide and 2,2-dimethyl-1,3-dioxane-4,6-dione.

• Other raw materials used in the production of bifenthrin include solvents, catalysts, and reagents.

• The synthesis process involves multiple steps, including purification and for...read more

The raw material in bifenthrin is a synthetic pyrethroid insecticide.

• Bifenthrin is synthesized from various chemical compounds.

• It is commonly derived from the reaction of 2-methyl-3-phenylpropyl bromide with 2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylic acid.

• Other raw materials used in the production of bifenthrin include solvents, catalysts, and reagents.

• The synthesis process involves multiple steps and r...read more

Distillation is a process of separating components of a mixture based on their boiling points. Filtration is a process of separating solids from liquids or gases. Drying is a process of removing moisture from a substance.

• Distillation involves heating a mixture to vaporize the component with the lowest boiling point, then condensing the vapor to collect the purified component.

• Filtration involves passing a mixture throug...read more

Heat exchanger design involves mass and energy balance, pump design, line sizing, and troubleshooting for efficient operations.

• Mass Balance: Ensures that the mass entering a system equals the mass leaving, crucial for designing heat exchangers and reactors.

• Energy Balance: Involves calculating energy inputs and outputs to ensure efficient heat transfer, essential for optimizing heat exchanger performance.

• Pump Design: Re...read more

The question covers slope percentage calculation of kiln, tan value in oil analysis, and material and manpower handling.

• For slope percentage calculation of kiln, we need to measure the height and length of the kiln and use the formula tan(theta) = height/length.

• Tan value in oil analysis is used to determine the acidity of the oil. It is calculated by dividing the acid number by the saponification number.

• Material and ma...read more

I have 10 years of experience in software engineering, specializing in backend development and system architecture.

• 10 years of experience in software engineering

• Specialize in backend development and system architecture

• Worked on projects involving scalability and performance optimization

No, I do not have a supervisor license.

• I do not possess a supervisor license at the moment.

• I have not pursued obtaining a supervisor license in my career.

• My focus has been on technical expertise rather than supervisory roles.

Testing of motors involves various methods to ensure functionality and performance.

• Performing insulation resistance tests to check for any electrical faults

• Conducting load tests to measure the motor's performance under different conditions

• Checking for abnormal noise or vibrations during operation

• Inspecting the motor for any physical damage or wear

• Using thermography to detect overheating issues

Transformer safety relays are devices used to protect transformers from faults and overloads.

• Transformer safety relays monitor the electrical parameters of a transformer, such as current, voltage, and temperature.

• They can trip the transformer offline in case of a fault to prevent damage.

• Some common types of transformer safety relays include overcurrent relays, differential relays, and temperature relays.