Answer / usman

induction motor draws very high current when it is get started
to limit this initial large current we use y configuration
because starting high current will flow through the common terminal to ground making no severe damage.

Answer / rami

yes

Whats the difference between three phase and single phase?

4 Answers  

---

Can we connect two CT'S to one energymeter?

1 Answers   KSEB,

---

I am going to appear for the RRB Chennai junior Engineer online exam. Please send me the previous exams question papers (also solved) to my mail id: rrkhandhar@yahoo.com

0 Answers  

---

What are the earth resistance Standards of 66kv sub stations according to indian norms.

2 Answers  

---

For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?

0 Answers  

---

what is the relation b/w KW and KWH? plz explain with example.

6 Answers   FAG,

---

Why nutral wir used thinner than phase wire

3 Answers  

---

What is difference between 3 point and 4 point starter

1 Answers   Genco, Kaltec, TATA,

---

what is ISF

1 Answers  

---

what is unit of inductance

12 Answers   Bhel, Bosch, OSML, Vijai Electricals, Voltage,

---

If u take a kWh reading in 11 kV HT and 440 LV side at same time in yesterday today , then why LT consumed units 3-4℅ high as compared to HT units

1 Answers   Brigade,

---

I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)

1 Answers  

---