Interested to Buy Any Domain ? << Click Here >> for more details...
According to ohms law voltage proportional to current, then why should current rating is low with high voltage rating in transformer?
- 5 Answers
- 7884 Views
- KEC, I also Faced
- E-Mail Answers
Answer Posted / p.anandsai
If pressure (Voltage) increases, current_________.
if your answer is ” also Increases”.
Then why we say that P = V x I, and V = P/I,
in other words V = 1/I
How can you explain This ?
Actually, according to Ohm,s Law I= V/R, clearly Current is directly proportional to the Voltage, But according to P=VI or I=P/V, it shows that current is inversely proportional to the Voltage.
Now Lets me try to explain this statement.
It depends on how you increase the voltage if you increase it by keeping the power of the source constant or not,,
if the power of the source is constant then the current would decrease when voltage increasing ….if you don’t care about the power and just simply replace the battery with a new one’s with higher power rating this can increase the current.
in Transformer, when voltage increases then current decrease because power remains constant…both side power is P=VI
By Ohm’s Law, Current (I) is directly proportional to the Voltage (V) if Resistance (R) and Temperature remain same.
I = V/R…..or…R=V/I…..or……V=IR.
According to P=VI…or…I=P/V….or …V=P/I,….. It says that Current inversely proportional to the voltage if power remain same.
as we know that in Transformer, If power remain same, and voltage increase, then current decreases in Step Up Transformer. also Voltage decreases when current increases as in Step Down Transformer.
Also on the generation side, same story will be there if power is constant.
but if we improve the power, then current and Voltage both will be increase.
So Do Not Confuse about this statement.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
quantizer means?
Why 1/3 is used in symmetrical components?
what is 30-phase of transformer
hello friends this is krunal here.. i have applied for he officer train in hpcl electrical stream.. any one who have applied before for electrical stream please help me out.. post ur reply to my mail id: krunal_airforce@yahoo.com.. any tips, old questions for paper or any help will do.. plz help me.. your faithfully, Krunal Darji
hii this is ranjith from hyd... i want to know what type of questions they ask in interview...and hw the interview will go..? what subjects thay ask specially for electrical engg students?
(In MEP services) HVAC in AC Plant room what else can we provide if the chiller is not considered?
What is different bewteen low or high impedance busbar protection scheme
what is difference between 5A and 100A CT constructional wise and operation?
if flux and load static in dc motor and supply voltage increases 20% then what happened in speed
Define settling time.
what is die electric strnth of transformer ?
how to find number of run cable laying[LT side] for transformer & alternator secondary side? [above condition for getting output power transformer to main panel side] give the example.
can u give me a brief idea about power line carrier communication ??
In a flange coupling, the flange bolts are designed for
armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?
