Answer / wareagle

HB: slow burning on a horizontal specimen; burning rate <
76 mm/min for thickness < 3 mm.
V2 burning stops within 30 seconds on a vertical specimen;
drips of flaming particles are allowed.
V1: burning stops within 30 seconds on a vertical
specimen; drips of particles allowed as long as they are
not inflamed.
V0: burning stops within 10 seconds on a vertical
specimen; drips of particles allowed as long as they are
not inflamed.
5VB: burning stops within 60 seconds on a vertical
specimen; no drips allowed; plaque specimens may develop a
hole.
5VA: burning stops within 60 seconds on a vertical
specimen; no drips allowed; plaque specimens may not
develop

Why we use duplex coil and hook switch in telephone system?

0 Answers  

---

How many Cylinders are there in Diesel Generator?

4 Answers  

---

why star connected transformers used in tneb?

1 Answers  

---

What is the ratio of true power to apparent power in an ac circuit?

0 Answers  

---

what is meant by carrier aided trip protection in transmission line

0 Answers   GE,

---

---

how many joints are allowed in underground HT cable of 1 KM

0 Answers  

---

what is the difference between b c d curves on mcb

0 Answers  

---

DEAR SIR,I GOT THE CALL LETTER FROM RRB, SECUNDERABD AS A JE-II SO PLEASE PROVIDE ME SOME MODEL QUESTION AND ANSWER PAPERS AND LAST YEAR QUESTION PAPERS

0 Answers  

---

what will happen if any motor runs long time with star connection in400vA.C. system

5 Answers  

---

how i meggar value of 11kv alternator winding.and with meggar.

1 Answers  

---

why the capacity of power plant is given in MW though the generators are rated in MVA?

3 Answers   TATA,

---

In scott connection why connect teaser transformer to 86.6% and main transformer to 50%..

1 Answers   Silicon,

---