Gas disharge plasma displays are the most well known type of alphanumeric displays.Their operation is based on the emission of…
For displaying large quantities of alphanumeric data,the readout system employed most commonly  is a familiar CRT.CRTs form the basis of CROs and TV systems.To generate characters on…
Optical fibres can be used for measurement of temperature.This is because the temperature induces changes in refractive index of the fibre.In fibre…
A firewall is a system that enforces an access control policey between two networks-such as your private LAN & the unsafe,public…
In the year 1974 B.C.C.L introduced a payroll system which used the computer concept.Subsequently the computerization was introduced for ledger,relative reports etc.In…
Bharat Coking Coal Limited is a subsidiary of Coal India Limited,Government of India Enterprise,mainly situated in the state of Jharkhand…
In practice two types of impulse voltages can occur (i) full wave and (ii) chopped impulse wave.If the lightning surge…
The zero-power factor characteristic (ZPFC) of an alternator is a curve of the armature terminal voltage per phase plotted against…
In an a.c. machine,any flux set up by the load current which does not contribute to the useful flux of…
The greater threat to computer is a computer virus,a program that causes a computer system to behave in unexpected and…