Answer Posted / mohammed aslam

Generally we use 4 types of starters in Motor Control Panels/Centers.

They are;
1. DoL-Direct online Starter
2. Start delta
3. Soft starter
4. Variable frequency Drive

A TRANSFORMER 440/400V,DELTA/STAR CONNECTED.THE NEUTRAL CONNECTED WITH GROUND CABLE THAT IS DIRECTLY CONNECTED TO THE PANEL,FROM PANEL IT IS CONNECTED EARTH PIT.IS IT RIGHT? IF IT IS RIGHT LEAKAGE CURRENT AFFECTED.SECONDATY IS PROTECTED WITH EARTH LEAKAGE RELAY.

2066

---

please send me privious exam's queation papers of section engineer(electrical).

2002

---

state working of halogen lamp?

1771

---

What happened when capacitor connect series in ac circuit?

1417

---

How can we choose the rating of submersible motors

2579

---



2342

---

Is there chopping current in resistive circuit

1891

---

Please define ohm’s law for a.c (alternating current)?

1024

---

which is the most advanced form of SF6 BREAKER?Can we use other gases to quench the arc?

1987

---

i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.

1874

---

What is the mmf,rgt and ngt please brief completely

1584

---

What are the electrical engineer roles and responsibilities in chemical plant?

1632

---

How do we calculate the resistance per metre of single core aluminium stranded cable 19*3.25mm sheathed in pvc,at 15 deg C temperature?

2346

---

A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.

2539

---

When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

1212

---