Answer / sumanth kumar b

neutral groundig is done for the generator and transformers
because for transformers if any sort of a failure in the
neautral wire then the earthing of ground can act as a
neutral for some time.If neutral is not been used then due to
the neutral wire failure if we use the lighting loads then in
that we generally use any one phase let it be R phase and
neutral y phase act as a neutral so in a single phase two
phase current passes it causes more damage to the loads.that
is why we use neutral grounding

HARMONICS ARE ALWAYS IN INTEGER LIKE 2ND OR 3RD HARMONICS,NOT IN FRACTION LIKE 0.5 HARMONICS.....????????

2 Answers  

---

11 kv line me tino phase takra jaye to present time me approximately voltage aur current kya hoga...

2 Answers   Electrical, Electrical Tech, Videocon,

---

What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.

0 Answers   DAE, Hindalco,

---

hi, is there a difference in choosing bus bar for DC or AC ,,if there can anyone help me about. thanks

1 Answers  

---

why DOL starter is use in induction motor as it is not reduce the starting torque

2 Answers   Maruti Suzuki,

---

what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)

2 Answers  

---

what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

0 Answers   Jindal,

---

If we are importing real power & exporting reactive power then what will be the effect on our system

3 Answers  

---

which is better 50 HZ supply or 60 HZ supply?

6 Answers  

---

Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com

0 Answers  

---

What is ELR, and where it is used ?

7 Answers   KSEB,

---

What is Auto Mains Failure Panel & Auto Synchronizing Panel

0 Answers  

---