Answer / meenakshi

hey,ur question is wrong men...in the first part i.e, V
proportional I is correct in accordance vid ohm's law. but
in de second part,dc electric power is just an exact
multiplication of voltage and current.n there is no
relation as u say.vil make u understand r8 nw...juz considr
a ckt havn a 18V battery and a lamp of fixed resistance of
3 ohm.nw curnt thru de ckt is 18/3=6A.now am gona increase
voltge alone to 36V WITHOUT DISTURBN THE LAMP..now de curnt
vil b 36/3=12A. coming to the power,for the first case it
is 108W n for the second case its 432W (P=VI).now what u
ave to understand is,V inversely prop to I vud ave been
correct iff powers of two ckts were constant.but
practically speakn it is not so as u can very wel c frm the
above mentioned example.

Answer / vijay

first one is correct ie.. V is directly proportional to I
and if both are correct in only one case that is p = (I*I*R)
then V=P/I=(I*I*R)/I = I*R that implies the same V is
directly proportional to I, not inversely proportional.

Answer / muthukumar

V is directly proprtional to the current when its constant
temperature other case´is calculating power

why we testing the core balance of the transformer before comissioning?

0 Answers  

---

What is ics,icu,icw of load breaker

5 Answers   Havells, NPCIL,

---

1. Why a DC motor starter is called 3 point starter

21 Answers   ABB, CG, College School Exams Tests, Crompton Greaves, Infosys, Siva,

---

WHAT IS THE difference betwwen LT CABLE AND CONTROL CABLE

5 Answers  

---

What is the most accurate way of testing ELCB?ELCB is better than RCD?

0 Answers   GECO,

---

What is the difference between Relay and Contactor

35 Answers   Siemens,

---

What is the application of Dyn1 and Dyn11 vector group of transformer?

0 Answers  

---

can any tell me why slope 40% and 80% is calculated in differential protection?

0 Answers  

---

What is the advisble power factor to be maintained in grid connecting power generation plnats without any effecting the generator.

1 Answers  

---

How i measured Bus bars weight without wighting ?

3 Answers   Encom,

---

what is the difference between indoor package substation and outdoor

3 Answers  

---

Why the transformers are rated in KVA ? in new view

3 Answers  

---