Answer / jakeer

Various reasons for motor getting over heated.
1.Due to faulty bearings.
2.Due to low voltages.
3.Due to load fluctation from the drive end.
4.Due to mis assembly of motor.
5.Due to rotor fotness problem.

what is the use of providing earthing for tanks? i know for lightning we use earthing ? Here one of my ONGC project there is no need of lightning protection and there is no power connection near by tank in that situation also ONGC asking earthing for tanks but we didn't understanding why they asking earthing? is anybody tell exact answer?

4 Answers  

---

Why the power factor of the alternator in power plant is kept .8 lagging. Can't we maintain it at 1.

3 Answers  

---

What is Star Delta Connection, where it is applied & what for it is used

4 Answers   Premium Transmission,

---

we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?

1 Answers   Siemens,

---

what is the generating transformer?

3 Answers  

---

In a d.c circuit, if current and resistance are known, power (P=I*I*R) can be determined. This relationship also applied to an a.c circuit. Comment the reason for this.

3 Answers  

---

Merits & Demarits of Oil circuit & Air circuit breakers ?

1 Answers   Genco,

---

How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

1 Answers   VECL,

---

why shoud in High tension cable( above11KV etc.,)a semiconducting material coating will be there on insulation?

1 Answers  

---

Is there any option to replace two Genset of capacity 125KVA with one higher capacity for same office?

8 Answers  

---

what is cutoff voltage?

3 Answers  

---

What is Nominal voltage?

3 Answers   Bhel, Equate,

---