PI Industries Interview Questions, Process, and Tips

There are several types of reactors used in various industries, including nuclear reactors, chemical reactors, and biological reactors.

• Nuclear reactors are used to generate electricity through nuclear fission, such as pressurized water reactors (PWR) and boiling water reactors (BWR).

• Chemical reactors are used in the production of chemicals and pharmaceuticals, such as batch reactors, continuous stirred-tank reactors (C...read more

Types of couplings include rigid, flexible, fluid, and magnetic couplings.

• Rigid couplings provide a solid connection between two shafts, allowing for no misalignment.

• Flexible couplings accommodate slight misalignment and reduce shock and vibration.

• Fluid couplings use hydraulic fluid to transmit power and allow for torque multiplication.

• Magnetic couplings use magnetic fields to transmit torque without physical contact.

• O...read more

Blowers are devices used to generate airflow or pressure. They are commonly used in various industries for ventilation, cooling, and conveying purposes.

• Centrifugal blowers: These blowers use centrifugal force to generate airflow. They are commonly used in HVAC systems and industrial applications.

• Positive displacement blowers: These blowers use positive displacement to generate airflow. They are commonly used in pneumat...read more

Internal and external standards are used in quality control to ensure accurate and reliable measurements.

• Internal standard is a substance that is added to the sample being analyzed, which is used as a reference to measure the analyte of interest.

• External standard is a separate sample with a known concentration of the analyte, which is used to calibrate the instrument and validate the accuracy of the measurements.

• Intern...read more

To prepare a solution, measure the required amount of solute and dissolve it in the appropriate amount of solvent.

• Determine the concentration and volume of the desired solution

• Measure the required amount of solute using a balance

• Add the solute to a volumetric flask or beaker

• Add the appropriate amount of solvent to reach the desired volume

• Stir the solution until the solute is completely dissolved

Instruments are calibrated by comparing their readings to a known standard and adjusting them accordingly.

• Identify the standard to be used for calibration

• Ensure the instrument is clean and free of debris

• Record the initial readings of the instrument

• Compare the readings to the standard and adjust as necessary

• Record the final readings and document the calibration process

Primary standards are highly pure compounds used for calibration, while secondary standards are less pure and used for routine analysis.

• Primary standards are used to calibrate instruments and determine the accuracy of measurements.

• They are highly pure and stable compounds that can be weighed accurately.

• Examples of primary standards include potassium hydrogen phthalate and sodium carbonate.

• Secondary standards are used f...read more