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

when a three phase motor in running condition consumes 2A in each phase,and if one of the phase gets fails what will be the consumption in other two phases

4 Answers  

---

why would amp draw on neutral wire be as much as amp draw on the hot leg.

0 Answers  

---

in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

0 Answers  

---

what is the function of avr when synchronous generator act as synchronous motor

1 Answers  

---

if flow of electrons is current then why their direction are different???

1 Answers  

---

what is the practical definition for voltage

3 Answers  

---

If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

0 Answers  

---

WHAT IS THE DIFFERENCE BETWEEN A DC MACHINE OUTPUT AND RECTIFIER OUTPUT...

3 Answers   Cesco, NTPC, RRB,

---

can we correct the p.f.of ac generator?

2 Answers   APGenco,

---

what is motor?

2 Answers   UIU,

---

WHEN WE TOUCH THE BOTH TERMINALS OF BATTERY WHY NOT THE D.C BATTERY GIVE US SHOCK SUCH AS A.C SUPPLY?

3 Answers  

---

what is IDMT relay.

4 Answers   Birla,

---