how the fan is switched off immediately switching off the switch?

2 Answers  

---

I WANT TO KNOW LONGFORM OF CT/PT USEDIN POWER PROJECTS OR HT SWITCH YARD.

7 Answers  

---

how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .

0 Answers   DVC,

---

What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

---

What is the meaning of STAR POINT? Why this important in CT and VT?

2 Answers   L&T,

---

why electric shock due to dc is dangerous than that of ac

8 Answers  

---

whether inrush current for lamps or capcitors should be considered cable sizing to feed that load.

1 Answers   Cipla,

---

How to calculate the External Resistance required for 60HP slipring motor in case no any data of the Motor is available???

0 Answers  

---

Explain what is use of lockout relay in ht voltage?

0 Answers  

---

how to check regenerative load in drived motor

0 Answers   Hindustan Unilever Limited, NHPC,

---

which on of the transformer have more core losses and why? 1. Distribution Transformer 2. Power Transformer

5 Answers  

---

Whats the minimum value for I.R. that can be allowed for HT & LT alternators for operation?

1 Answers  

---