Answer / rajeshsan

The selection of 4 pole or 6 pole depends on application and speed.

To explain in detail

speed, N = 120f/p
where,
N
f = frequency
p=poles

From above it was clear speed depands on frequency and no of poles.

Answer / shyamkr

actually this depends on the operation of the motor.in most
of the cases 6 pole motor are more beneficial since we get
close wave form of flux as compared to the sine wave.
but when explanation is needed for the motor operation then
4 pole motor is very easy to understand.

if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?

0 Answers  

---

what is counter poise conductors

0 Answers   IBM,

---

What are the special cables required for explosion proof wiring?

2 Answers   IVRCL,

---

Why 60Hz frequency is used in America what are all the benifits?

5 Answers  

---

difference between alternator & GENERATOR

4 Answers  

---

what is the difference between an alternator and a synchronous motor

0 Answers  

---

which mm cable should be used for 1.hp immersible pump motor for the distance of 330 metres?

0 Answers  

---

why is the earthing pin on 3 pin top are big and thick

3 Answers   Marriott,

---

what exactly commisioning work does in electrical site work... LT side?..

0 Answers  

---

What is electrical charger?

3 Answers   HCL,

---

why HT motors are earthed only at equipment side & for it's single core cable with aluminium wire armoure using?

1 Answers   Legrand, NLC Neyveli Lignite Corporation Limited,

---

Will u plz give me simple diagram for tube light connection & also function of chock?

8 Answers   Bhushan Power Steel, Dalmia Group, Jindal, Practical Viva Questions, TCS, Windmoller,

---