Safety Instrumented System Engineer Interview Questions
A SIS is engineered to perform “specific control functions” to failsafe or maintain safe operation of a process when unacceptable
Layers of Protection Analysis (LOPA) Interview Questions
It is a simplified risk assessment method. It provides a method for evaluating the risk of hazard scenarios and comparing
BJT Amplifiers Interview Questions & Answers
1. Explain what is an amplifier? The device that amplifies the amplitude of the input signal is called the amplifier.
Electronic Equipment Purging Principles & Standards
What is Purging? Purging/pressurization systems permit the safe operation of electrical/electronic equipment under hazardous conditions when approved hazardous location equipment
Variable Frequency Drive (VFD) Working Principle
History of Variable Frequency Drives (VFD) When Tesla first introduced the 3-phase alternating current (AC) induction motor in 1888, he
Thermowell Design Guidelines
When fluid flows past a thermowell inserted into a pipe or duct, vorticies form at both sides of the well. These vorticies
Coriolis Mass Flow Meter Working Principle
Mass flow meters are the types of flow meters that are mainly employed in mass-related processes such as chemical reactions,
Working Principle of Vortex Flow Meter
Vortex flow meters measure the frequency of vortices generated by a bluff body or shedder bar to calculate an equivalent volumetric flow rate.
Thermal Mass Flow Meter – Principle, Advantages, Applications
Thermal mass flow meter principle is rate of heat absorbed by a fluid flowing in a pipe or duct is directly proportional to its mass flow.
Oval Gear Meter – Principle, Advantages, Limitations, Applications
Oval Gear Meter measures flow by using a geared rotor to pass known volumes of fluid through a housing. (Positive Displacement Flow Meter)