Answer / santosh

Three phase induction motor is a self starting motor where
as 1-phase cannot.

The reason is in order to intiate the roating action there
should be rotating flux .In single pahse you cannot have it

Answer / deepak thakur

visually defferance in 3 phase &1 phase motor
3 phase have 6 connecting terminal
1 phase have 2 connecting terminal

Answer / manish gupta

there is much difference in single phase induction motor and three phase induction motor. First,single phase induction motor is not self starting it requires some capacitor to create voltage difference to start.While three phase induction motor is self starting it do not require capacitor to start.
second single phase induction motor is used for small load eg. fan etc. while three phase induction motor for large load eg. lift,elevator etc.
third single phase induction motor uses less power while 3-phase induction motor uses much power.1-phase are smaller in size while 3-phase induction motor are bigger in size

1. what is difference between VCB and ACB.how its works please explian.

6 Answers   ABB, Accenture, HP, Minda, Mother Dairy, Satyam Pharma,

---

FULL FORM OF MCCB

3 Answers  

---

We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power factor setting : 0.90, then winding temp. Low. but when setting done : 0.83, then Winding temp. increase. WHY Why ? ? ?, plz give me answer.

4 Answers  

---

why DC is not generated instead of AC?

4 Answers  

---

When dc supply is fed to rotor of the alternator how it work?

0 Answers  

---

why odd hormonics only will effect the power system.why not even hormonics

1 Answers  

---

In what voltage EHT works(133/132/33/66kv?

3 Answers   Adhunik,

---

Why the brushes used in dc machines are made of carbon not from other metal?

2 Answers  

---

why r we using shell transformer for low voltage

0 Answers  

---

How to do the meggering for a cable.

6 Answers  

---

I have 1500KVA transformer ,How much Maximum KW Load is allowed?

15 Answers   GKC Projects Limited GKCPL,

---

Is vtg is controlled by the resistor? if else how much?

0 Answers   Sail,

---