why do we need a 4th wire in 3phase 3wire transmission line
- 6 Answers
- 7474 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / manish2march@gmail.com
some time it needs to protect the transmission line from
lightning .so 4 wire is preffered as ground wire....
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / n rajesh
One is Red
second is yellow
third is blue
fourth is green for earth.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / sudhir singh
Fourth wire
needed in line
is of GI
provided for
earthing purpose
in case of any
fault occuring
in line we can
call it earth
conductor
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / b.janardhana rao
4th wire we can use earth wire at the same time it can protects from lightning.
| Is This Answer Correct ? | 0 Yes | 0 No |
1. what is the power factor of a purely inductive load? 2. Which type of transformer connection is preferred in case of power supply transformers? 3. In power transformer usually which winding is closer to the core? 4. what will happen to the generated emf if the no. of poles of an alternator is increased?
What is the most essential condition for the voltage build up for a d.c. Shunt generator?
Why we apply 100ADC for contact resistance measurement?.If we apply AC what will happen
What is electrical grounding?
What is the mmf,rgt and ngt please brief completely
What is the difference between a verilog task and a verilog function?
What is minimum phase system?
Sir i completed diploma in electrical from govt. Polytechnic dhanbad (jharkhand) . In 2012 . Now i am working in sail iisco plant . Sir i want to get electrical supervisory certificate for applying in ongc . From where i get this certificate please guide me procedure step by step
How to confirm the Phase shifting Transformer VECTOR GROUP relation , as below ZNy11.45d10.45-ZNYy0.15d11.15
Why Magnetic Core Balance test is performed only on Star side of Transformer and not on Delta Side of Transformer (Vector Group Dyn11)?
If o/p power is doubled by how much does the sound increase
what the purpose of data retrivala panel in substation
-
Civil Engineering (5085) - Mechanical Engineering (4451)
- Electrical Engineering (16632)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
