Free chlorine Analyzer Principle
The sensor has three electrodes: a measuring electrode (gold), a counter electrode (gold), and a reference electrode (Ag/AgCl). A precise potential is built up between the measuring and the reference…
Tomography Objective Questions
Instrumentation Tools assists you with a complete guide of objective questions which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competitive exams and to…
Thermography and Thermometry Objective Questions
Instrumentation Tools assists you with a complete guide of objective questions which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competitive exams and to…
Classification of Bridge Circuits
The two Types of bridges are, D.C Bridges A.C Bridges The D.C bridges are used to measure the resistance while the A.C bridges are used to measure the impedances consisting…
Permanent Magnet Moving Coil Instruments (PMMC)
The permanent magnet moving coil instruments are most accurate type for direct current measurements. The action of these instruments is based on the motoring principle. When a current carrying coil…
PMMC Temperature Compensation
The basic pmmc instrument is sensitive to the temperature. The magnetic field strength and spring tension decrease with increase in temperature. The coil resistance increases with increase in the temperature.…
What is Cathode Ray oscilloscope ?
In studying the various electronic, electrical networks and systems, signals which are functions of time, are often encountered. Such signals may be periodic or non-periodic in nature. The device which…
Cathode Ray Tube (CRT)
The cathode ray Tube (CRT) is the heart of the C.R.O. the CRT generates the electron beam, accelerates the beam, deflects the beam and also has a screen where beam…
Electron Gun of Cathode Ray Tube
This post is the continuation of the previous post on cathode ray tube. The electron gun section of the cathode ray tube provides a sharply focused electron beam directed towards the…
CRT Fluorescent Screen
The light produced by the screen does not disappear immediately when bombardment by electron ceases, i.e., when the signal becomes zero. The time period for which the trace remains on…
