
The share of generation fueled by coal in the US has declined dramatically in recent months.Coal’s share of total power generation first fell below 40 percent in November last year and averaged 36 percent during the first quarter of 2012,compared with an average of almost 45 percent during the same period last year. Much of…

In orthographic projection uses two main planes,called reference planes or principal planes of projection.One is horizontal plane(H.P.)and other is vertical plane(V.P.).These two planes intersects each other at right angles in a line XY called as reference line.The projection on the vertical plane (V.P.)is called the front view or the elevation of the object and the projection on the horizontal…

(i)In CAD,the man and the electronic machine are blended together to form a problem-solving team with each doing those tasks each can do best.The human being and electronic machine complement one another.In comparing the capabilities of man and computer,it will be found that man can think and can make decisions using his analytical mind.The computer has tremendous speed,it works…

PMMC Construction PMMC-The permanent magnet moving coil instrument is the most accurate type for d.c measurement.The working principal of this instrument is same as that of the d’Arsonval type of galvanometers,the difference being that a direct reading instrument is provide with a pointer and a scale. Construction of PMMC Instrument- The general constructional features of this instrument are shown (i)…

MATLAB is a numerical computing environment and programming language,maintained by the math works.MATLAB allow easy matrix manipulation,plotting of functions and data,implementation of creation of user interfaces,and interfacing with programs in other languages.MATLAB was first adopted by control design engineers algorithms,it is now also used in education.Simulink is an environment multidomain simulation and model based design…

1.It is TDMA(time division multiple access) FDMA(frequency division multiple access)technology. 2.The initial coverage area for each cell is greatly offered by link budget.(how much loss(db)can be tolerated over the air link between the phone & base station). 3.It is having hard hand off.(break before make). 4.It cover less cell radius. 5.GSM claim 3/9 reuse pattern(theree…

NTPC Â limited currently has eight hydro electric projects aggregating 12,702 MW at various stage of development.Of these 1,320 MW is under construction including the koldam project in the himachal pradesh and the tapovan-vishnugad project in uttarakhand. The tapovan-vishnugad project is expexted to have an installed capacity of 520 MW.The project is located on the dhauliganga…

This is the operation of joining the components with PCB after the operation the circuit will be ready to use to avoid any damage or fault during this operation following care must be taken. 1.A longer duration contact between soldering iron bit & components lead can exceed the temperature rating of device & cause partial…

Electromagnetic compatibility (EMC) is the branch of electrical sciences which encompass the unintentional generation,propagation and reception of electromagnetic energy with reference to the unwanted effects that such energy may induce.Electromagnetic interference or EMI is a disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emitted from an external source .it…