Calculate Temperature Coefficient of RTD
RTD's are based on the principle that the resistance of a metal increases with temperature. The temperature coefficient of resistance (TCR) for resistance temperature detectors (denoted by αo), is normally defined as the…
Relationship between Temperature Scales
Relationship between Temperature Scales Relationship between Fahrenheit and Celsius To determine the relationship between Fahrenheit and Celsius, we could draw a graph of F (temperature in °F) versus C (temperature…
Equivalent Logic Gates using PLC Ladder Diagrams
Explain the basic digital logic gates circuit and boolean logic with PLC programming. Show the Equivalent Logic Gates using PLC Ladder Diagrams.
Rectifiers & Filters Interview Questions
1. Explain what is a dc power supply? The part of the equipment that converts ac into dc is called dc power supply. 2. Explain what is a rectifier? A…
PLC Program Examples
Discuss different PLC program examples for Signal lamp task, Valve operation program and make an output switch off when any of the sensors activated.
PLC Multiple Outputs Configuration
PLC Multiple Outputs Configuration useful for PLC Sequence of Outputs or Sequence Logic, PLC Ladder Rung with two inputs & two outputs.
PLC Latching Function
PLC Latching function is a self-maintaining circuit in that, after being energized, it maintains that state until another input is received.
PLC Logic Functions
In PLC programming, we use different PLC Logic Functions based on basic logic gates like AND, OR, NOT, NAND, NOR, Exclusive OR, Exclusive NOR.
Basics of Control Valves
Valves are used for thousands of purposes, from simple and mundane tasks, such as turning on the water in a kitchen sink, to tasks as important and difficult as controlling…
Introduction to PLC Ladder Diagrams
A ladder diagram is read from left to right and from top to bottom. When the PLC is in run mode, it goes through the entire ladder program to the…
