Answer / a.p.nanjappa

Generally all sw yds are designed with outdoor lighting
system with normal and emergency power source.
the main reason may be security,power saving.management
decisions

If a HV Underground Cable (13.8KV) is layed in the ground below 1.5 Mtrs and any building construction is done on the Cable route. IS this allowable or Not? What should be the clearance. As per ISO construction on HV cable route is safe or Not? Why? Can any body suggest the site for my question?

1 Answers   ZCL,

---

why there is a humming noise in transformer

6 Answers  

---

how will be power factor while using the resistive load and Capacitive load?

3 Answers  

---

how much earthings are mendatory at a 25kva sub station?

3 Answers   Bhel,

---

What is the difference between relays and contactor construction wise?

0 Answers  

---

---

what is the difference between capacitive voltage transformer & inductive voltage transformer.

3 Answers  

---

Give me the calculation steps to design an electromagnet to be work in 230V 50 Hz AC Supply. Also give force that is created by that electromagnet when it gets energized.

0 Answers   GE,

---

what is current

8 Answers   NTPC,

---

Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm

0 Answers  

---

What is the differance between 2 dc motors of armature voltage 660 v and 440 v?

0 Answers   Kirloskar,

---

xfhnchncv?

0 Answers  

---

What is master trip relay? How does it work?

1 Answers  

---