30 Most Common Interview Questions with Answers

Q: What is a hazardous area?A: A hazardous area is a location where flammable gases, vapors, or dust may exist in sufficient quantities to produce explosive or ignitable mixtures. Q: What are the main types of hazardous materials considered?A: Gases/vapors and combustible dusts. Q: What are the different methods of hazardous area classification?A: IEC/ATEX (Zone […]

Instrument Calibration – 20 Most Common Interview Questions with Answers

Instrument Calibration – 20 Common Interview Questions Instrument Calibration 20 Most Common Interview Questions & Answers 1. What is calibration? Calibration is the process of comparing the measurement values of a device under test (DUT) with those of a calibration standard of known accuracy. The goal is to detect, correlate, report, or eliminate by adjustment […]

Pressure Instruments- 20 Most Common Interview Questions with Answers

Pressure Instruments – 20 Common Interview Questions Pressure Instruments 20 Most Common Interview Questions & Answers 1. What is the difference between absolute, gauge, and differential pressure? Absolute Pressure: Measured relative to a perfect vacuum (zero pressure). Gauge Pressure: Measured relative to the local atmospheric pressure. It can be positive or negative (vacuum). Differential Pressure: […]

Orifice Plate Flow Meters – 20 Most Common Interview Questions with Answers

Orifice Plate Flow Meters – 20 Common Interview Questions Orifice Plate Flow Meters 20 Most Common Interview Questions & Answers 1. What is the basic working principle of an orifice plate flow meter? An orifice plate flow meter operates on Bernoulli’s principle. It consists of a thin plate with a precisely machined hole (orifice) inserted […]

Ultrasonic Flow Meter – 20 Most Common Interview Questions with Answers

What is an ultrasonic flow meter?An ultrasonic flow meter measures the flow rate of a fluid using ultrasound waves. It calculates the flow based on the time difference or frequency shift of the ultrasonic signal. What are the two main types of ultrasonic flow meters? Transit Time (Time-of-Flight) Doppler Type Explain the working principle of […]

Vortex Flow Meter – 20 Most Common Interview Questions with Answers

1. What is a vortex flow meter? A vortex flow meter measures the flow rate by detecting the vortices shed from a bluff body placed in the flow stream. It uses the Von Kármán effect. 2. What is the principle behind vortex flow meters? Vortex flow meters operate on the Von Kármán Vortex Street principle. […]