Why battery is always operate on dc supply?
Answer Posted / bvyankatesh
Dc means single polarity supply, when dc supply is given battery is charged with positive polarity only and on application of loaddstorage energy in battery will discharge. tut if there is a.c. supply is given then after each half cycle polarity of supply get reverse it lead to maintain stored energy's in battery is zero.
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
what is the chiller and working principal
how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you
I am EEE student i want to improve my core side skills.how cn i approach it?
Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?
Atwhat condition reverse power relay will act?
why ss stablity limit is more transient stablity limit?
is it possible to say motor horsepower number without seeing name plate(when name plate damaged)
Earth bits close or open. Which is correct
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
how does an centrifugal and screw type chiller will work. which chiller efficiency is high and why.
can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...
what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing
brief notes on ammeters
What is the principle of HIGH SPEED DIRECT DRIVE MOTOR ?
what shoud be strength and weakness to impress interviewer????????