Answer / 7anoter4

If the supply system was 3 phase with neutral the single-
phase consumers [lighting, single-phase motors and so on]
could work [you have to check the other two phase are
disconnected at first].The current on the remaining phase
will rise since all load will stay on this single phase [it
depends on how was the load distributed per phase]. The
three-phase motor will not work at all-no start- no current
for ungrounded stator winding and high current for grounded
one].

If the supply system was 3 phases without neutral nothing
would work [you supply one-phase without return through
neutral].

rrb question

0 Answers  

---

how calculate cable size in squre mm, when the load is given by in kw? do u have current rating chart of elctrical cables?

4 Answers  

---

there is a line fault some where on the ove head distribution line. how will i locate the fault for clearing it? ofcourse i have to megger the line but what information makes me clear that the fault is in that section of the line?

2 Answers  

---

The corona effect is more in a) summer b) winter c) dry weather d) humidity weather

10 Answers   CPCL,

---

What are the differents between Breaker & Contactor?

8 Answers  

---

---

Why NGR is provided in sub station?

4 Answers   MMS,

---

why electron flow is opposite to current flow?

3 Answers  

---

what are tpes of insulaors& its uses

1 Answers   ABC,

---

In power transmission using open belts or horizontal shafts it is preferable to have the slack side of the belt on the top because

0 Answers   Caterpillar,

---

What is Diff btw Fire Alarm & VESDA System???

0 Answers   EFY, Emerson,

---

why it is important to earth neutral of 3 phase transformer?

9 Answers   IBM, ITC Indian Tobacco Company, RRB, UDS,

---

Explain with example of functional requirements of protection relay in terms reliability, selectivity, sensitivity

0 Answers   NCC,

---