Answer / abishekmittal

Answer 1. is correct. In addition to it, with the decrease
of voltage, current will also come down (V is directly
proportional to I for constant R). Hence the bulb will get
dimmed as the I^2R also gets reduced

Answer / suresh

IF THE BULB POWER HAVINE 60W MEANS ,I^2R IS 60W.IF VOLTAGE
DECREASED BELOW RATED VALUE .BULB WILL DIM.

Answer / victor

answers #1&2 are applicable only in purely resistive load,
ex. an incandescent bulb , so both were correct .

Answer / md. obaydur rahman

All the above answers are wrong because we know that for a
constant power rating,
P=V*I
i,e. I=P/V
From the above equation we can see that if the voltage
changes the current is also changed for a constant power
rating i,e. if voltage reduced the device draws more current
to consume its power rating and vice versa.

Why corona leads to production of Ozone and glow of the color VOILET?

1 Answers  

---

what mean by power factor

2 Answers  

---

various transmission tower like .,D tower ,K.C.O tower ,C.C.O tower,K.C.R tower ,C.C.R tower ,H.C.O tower in different tons.

1 Answers  

---

why we use MV panels??? what's r all the needs

4 Answers  

---

what you mean by vector group of a 3 ph transformer

1 Answers  

---

what is the difference between capacitive voltage transformer & inductive voltage transformer.

3 Answers  

---

Cummins 750 KVA generator how much disel consumed per hour and how many units generated on 100% full load.

1 Answers  

---

Will a bulb glow if we connect it between the phase and earth instead of earthed neutral?

3 Answers  

---

what is the reason the main breaker is trip during the motor is running? (some time the breaker is not trip)

1 Answers  

---

How to improve the power factor from 0.8 to 0.98? Also tell me cost vs benefit analysis.

2 Answers  

---

Hi,Any one has idea regarding the KPTCL Recuirtments for AE'e & JE's for the year of 2009-10???Kindly help in regards..

1 Answers  

---

We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

---