Instrumentation Earthing

S Bharadwaj Reddy
Earthing is the process of creating an alternative path for the flow of fault/excessive currents safely into the ground in the presence of minimal resistance or impedance. The primary purpose

Different Types of Thermometers

S Bharadwaj Reddy
Thermometers can be classified according to the nature of substance which expands. Expansion of solids             (a). Bimetallic  thermometers Expansion of liquids             (a) Liquid in glass thermometers             (b)

Questions on Thermocouple and Pyrometer

S Bharadwaj Reddy
Study the Temperature Sensors Questions and Answers for your interview preparation. This article focus on Thermocouple and Pyrometer Questions. Thermocouple and Pyrometer 1. Define Seebeck effect? When a pair of

Disadvantages of Resistance Temperature Detectors

S Bharadwaj Reddy
Resistance Temperature Detectors (RTDs), are sensors used to measure temperature. Many RTD elements consist of a length of fine wire wrapped around a ceramic or glass core but other constructions

PLC based 4 Way Traffic Light Control System

S Bharadwaj Reddy
We most often come across four way traffic jam in our city. This PLC ladder logic gives the solution to control city traffic  using programmable logic control. 4 Way Traffic

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