Answer / abhilav vishwakarma

A contactor works on the principle of Electro-magnetism. IT
comes under the category of switch gears and all the switch
gears performs the same function of Switching.

A contactor consists of mainly 2 parts-Fixed and movable
jaws. the fixed jaws are firmly connected with the circuit
and is a provided with a COIL having movable jaw as soon as
current is allowed to flow from the circuit the COIL gets
charged and due to electromagnetic effect it attracts the
movable metal jaw, thus the circuit is complete with the
CONTACT provided by the movable jaw. this is the
functioning of contactor. When current through the circuit
ceases , coil demagnetises and movable jaw is pulled apart

Answer / seran

CONTACTOR IS USED TO AS SWITCH

Answer / kumar

low resistance flow of high electrons

can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value

0 Answers  

---

if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?

0 Answers  

---

What do we use in Motor core laminations..???CRGO or CRNGO..and why..????

1 Answers  

---

Where all & Why resistance grounding is required?

1 Answers  

---

What is on delay and off delay timers

1 Answers   NCC,

---

---

What is the minimum percentage of power that a powerplant can support in ilanding mode ?

1 Answers  

---

what the principle of sincroscope?how it works?when it needed?

0 Answers  

---

what is the formula for converting KW into KWH ?

3 Answers   Blue Star, Essar,

---

electrical resistance in human body?please dedails quick. mail.psrinivasan20@yahoo.com

2 Answers   CTS,

---

Brief use of isolation transformer & how it works.

1 Answers  

---

How calculate the Transformer Impedence With Example

3 Answers  

---

HOW DG WORKS ?

3 Answers  

---