if we increase frequency of line, then how will string efficiency varies with it.

2 Answers  

---

How to connect a ELCB with contactor and relay ?

0 Answers  

---

What are the ratings of VCB, MCB, MCCB, SF6, ACB, and OCB?

0 Answers  

---

Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.

0 Answers  

---

What is the safety protection? Name the protections of Transformer?

1 Answers   HSL,

---

How much load can take a 16 mm aluminum cable 3 phase

0 Answers   L&T, Sanga Energy,

---

Define motor & pump?

3 Answers  

---

what is the lemen of a single 5mm 13000mcd white led pls reply

1 Answers   Eskom, Sona,

---

what is second harmonic, how is effect transformer ?.

2 Answers   DEWA,

---

What are the advantages of DOL starter?

7 Answers  

---

Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

0 Answers  

---

Why back emf used for a dc motor? Highlight its significance.

0 Answers  

---