Self Actuated Pressure Control Valve Principle
Self actuated pressure control valve do not depend on any external signal for pressure control. As the name suggests, pressure in the process line itself is used as an actuating signal…
Zero Speed Switch Working Principle
Monitoring Speed is essential in any automation process. Speed of any equipment driven by an electric motor can very due to variety of reasons e.g. overload, underload, breakage of transmission…
Overview of Proximity Switches
A proximity Switch is a sensor able to detect the presence of nearby objects without any physical contact. Application:- Proximity switches provide better alternative to the conventional electro-mechanical limit switches for…
Electrical Terminology
The Basic Electrical Terminology Terms as follows: Active Power (Watt): Sometime called Real Power, True Power or Effective power. It describes the actual amount of power present in a system…
Main differences between Sinking and Sourcing Circuits
Sinking vs Sourcing : What are the main differences between sinking and sourcing circuits ? Sinking is switching the load in the negative leg of a circuit.
Difference Between the Sinking and Sourcing?
So why the confusion over Sinking and Sourcing? What's the difference anyway? Sinking and sourcing circuits are often a source of confusion for people newly introduced to the concept, especially…
Questions & Answers of Power Systems
What are the sources of reactive power? How it is controlled? The sources of reactive power are generators, capacitors, and reactors. These are controlled by field excitation. Give some excitation…
Ultrasonic Flow Meters Animation
Ultrasonic Flow meters measures Fluid velocity by sending ultrasonic pulse from an upstream transducer to a downstream transducer and back again.
Top 100 Switchgear and Protection Interview Questions
What are the functions of protective relays To detect the fault and initiate the operation of the circuit breaker to isolate the defective element from the rest of the system,…
How to Measure Pressure in Inches of Water Column
how inches of water column is used as a unit of pressure measurement. Practical applications and a conversion formula to psi are included.
