In motors how many types of cooling systems were used?

0 Answers   NTPC,

---

how much current a 100 sq mm busbar will carry?

1 Answers   ABB,

---

If i switch on a transformer but with no load connected to the secondary path.Is the transformer will burn?

5 Answers  

---

what happens if power factor is maintained at 0.9?give me the answer in technicall way rather than telling the penality n all

5 Answers   NCC,

---

why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

0 Answers   Indcoil Transformers, Power Grid,

---

what is sinwave ups

1 Answers   Exide,

---

State the points to be considered for selecting a particular type wiring.

0 Answers  

---

if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.

2 Answers   Jakson,

---

Sir I hv to fix 20 ton ac how much electrical power need apply?

1 Answers   Sealand Restaurant,

---

what is surge impedence loading

2 Answers   NHPC,

---

can the measured percentage error during calibration of single phase energy meter be negative?

0 Answers  

---

How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?

0 Answers  

---