Answer / mahavir jagdev

220, 50 HZ was used by the British and India too followed it just like in Europe. The Americans being different as usual chose 110v 60 HZ for domestic supply. The 110 v was for safety from getting a shock, but the 60 HZ equipment will have more eddy current losses but for 3 phase the synchronous speed of the motors will be higher.

Answer / biswa.biswa2010

my country is the supply system with 50Hz and in system
supply system equipment is made from the 50Hz supply.60Hz
supply is not used in this caused.

Why we choose 400kv,220kv,132kv,66kv,33kv transmission voltages for transmitting power. Why not other voltage levels.

21 Answers   College School Exams Tests, HC, HCL, Jaypee, JPMorgan Chase,

---

How to protect sensitive loads such as Dosing pumps inside a factory from voltage surge/voltage fluctuation.

0 Answers  

---

Does induction motor start with dc power supply????

4 Answers   Essar,

---

What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

0 Answers  

---

We have three phase dg of 12kva rating.If the load of each phase is not constant.That means one phase drowning more load than remaining two phase..Then what will happen to dg?

1 Answers   Indotech,

---

what are the types of sus station ?

13 Answers   NTPC,

---

what is power and what is watts detailed description and formulas

2 Answers  

---

What is the full form of SON-T lamp?

1 Answers   HAL,

---

what is ripple component in ac supply?

2 Answers  

---

how we can improve P.F. by using capacitors ?

22 Answers  

---

would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......

0 Answers   BARC,

---

ther is any difference if we use 240 V A.C,50 Hz,1 Ph. in place of 230 V A.C,50 Hz,1 Ph.

4 Answers  

---