Answer Posted / sunil kumar sinha
Ohms law is applicable where there is no induction/
inductance. It is applicable where only resistance is
present. This can happen in D.C. Circuit and ohm's law is
100% applicable in D.C. circuit. In A.C. circuit, impedence
which consist of resistance and inductance is applicable as
load. i.e r+jwL. The inducatance depends on frequency of
system and L (henery).
D.C Circuit : C = V/R, where C is current, V is voltage, R
is resistance
A.C. circuit C = V/Z where Z = R+JWL. Z is impedence, L is
inductance.
Transformer works on the principle of induction and has no
of coils both in the primary and secondary windings.Hence
very high inductance and very low resistance. Here
Impidence (Z) is very close to wL both in primary and
secondary windings as resistance is very low in both the
windings. Hence the transformer circuit does not obey ohm's
law.
| Is This Answer Correct ? | 12 Yes | 1 No |
Post New Answer View All Answers
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.
why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?
what is the function of statics switch in ups and tell me parts
When lag/lead/lag-lead compensation is employed?
i am completed my degree(B.E EEE) 2014 anychance to get electrical licence plz help me
How to choose size of the cable w.r.to current carrying capacity ...
How many kinds of E.L.C.B and how to work E.L.C.B
why occ characteristics of generator is also called as magnatization characteristics ?
What are the types of class b amplifier?
state the working principle of incondenscent tube?
What is the use of iron core in a transformer?
can anyone tell me can the electromagnetic waves can be reflected back?if so how &by which material it can be reflected back?please tell me so that it can help to my wireless power trasnmission device.
What are the types of the glands and difference between single and double compression type of cable Glands.
What is the power requirement of tamil nadu for one month?
what is the difference between circular wdg & ractangular wdg?
