electrialstandards

Alternator in Cars Alternators are used in cars to generate current for running of cars. We quite often get confused that why alternator is required when there is battery available in cars. Battery in cars is only used for starting the cars, but for lights operation and functioning of other parts current is required now from where that power will come??? For fulfilling the above purpose alternator is required, alternator has following functions in cars:- (i)             Running of lights, heater, Air conditioners and operation of other electrical accessories (ii)           Recharging of battery as it get discharged during starting. Now how this alternator works in cars and who provides mechanical power to alternator so that power output can be generated at alternator output?? When you switched off your car engine than radio of car will work on car battery. For engines running following a...

There are following procedure to be adopted for correct dimensioning of a plant (i)             Load Analysis:- First step in dimensioning of a plant is to check for connected load and their location Now check for location of power distribution panels Now we can calculate cable requirement i.e. length of cables and path of cable laying Now we will do calculations of total power consumption while taking account utilization factors and demand factors (ii)           Transformer and generator size calculations:- Transformer and generator size are usually selected 15-30% more in comparison to total connected load considering future prospectus. (iii)          Conductor size selection - Now we calculate cable size according to load requirement of various connected loads. Cable selected may be copper or aluminum. Cables selection must also consider voltage...