Answer / arshad m, calicut,kerela

Contactor is used for controlling the Device.It contain one
energising coil and auxiliary contacts ie NO or NC.Whenever
the coil gets energise its auxiliarry contacts position
changes ie NO become NC and NC become NO.

Answer / ashirbad behera

its an electrical device used for supplying controlled
power supply to electrical equipment along with some other
auxilary contact i.e. NO/NC.or simply u can say its a
distant switching device.it has one magnetic coil,when ever
we give control supply to its coil its get energised &
pulls up main contact for supply leads to make electrical
ckt.again we remove control supply to its coil its de-
energise to release contact.

Answer / tanmay kumar

Contactor is an electrically controlled switch used to make power circuits.

What is TR of AC?

11 Answers   Carrier, Reliance,

---

in catridge heeter  watts =110, 260 v ,  i checked in multimeeter meeter shows 50 ohms but oms law r=v square /w  260*260=67600, and 67600/110=614.5 ohms  how to caluclate exact ohms in heetre s 

2 Answers  

---

what is called star connection and delta connection also purpose of this connections?

3 Answers   Siemens,

---

Determine the MVA rating of the power transformer given that 110/66 kV,1000 Amps. Folks how can i calculate the MVA rating with this Data??Plz Help........

1 Answers  

---

if we increase frequency of line, then how will string efficiency varies with it.

2 Answers  

---

---

Why do we avoid electrical conduits in floors at apartments?

0 Answers  

---

why there is a 2 slits in three pin's earthing pin?

1 Answers  

---

i want some interview related questions with their answers which can help for attend the interviews...

0 Answers   Janta Glass,

---

When a capcitor is used on 440 v thenthis is kvar rating 25kvar .my question is that when we use this capcitor  use 480 v &525 volt .how much kvar increase . Plz give my question ans. And give answer with formula .my mail id is rohitashsaini013@gmail.com

1 Answers   Neptune,

---

Why starters are using the machines???

5 Answers   Alstom,

---

A 2D array X(7,9) is stored linearly column wise in a computers memory.Each element requires 4 bytes for the storage of the value.If the first byte address of X(1,1) is 3000,what could be the last byte adress of X(5,8)?

2 Answers   TCS,

---

primery try cell?

0 Answers  

---