Answer / k mutyala naidu

by using three point starter we cant control(different speeds) the speed,but by using 4 point stater we can control the speed of the motor.

Answer / sheikh

3 point starter used to make and break the only for phasees
like Red , Yellow & Blue phase. and 4 point starter used to
make & break the 3 phase and Neutral also . 4th point may use
for make & Break the neutral of given circuit

Answer / shiva

high current in four point starter

single phase voltage 230 and Three phase voltage 450 why 690 voltage

1 Answers   XYZ,

---

What is a unit of gravity (Battery)

9 Answers  

---

Among the following Which is vector quantity? a. Flux b. permitivity c. flux density d. magnetic intensity

2 Answers  

---

in star delta starter current is 1/3times the delta value how?

2 Answers  

---

Why delta connected motors are used normally.

4 Answers  

---

what is a core company? why should we join a core company?

1 Answers  

---

I meggared my 2c*70 sq mm AL AR XLPE cable. its one end show 50 M ohm . is my cable is safe for laying. I have only one phase and neutral.

0 Answers  

---

Without seeing the nameplate descriptions of a rotating machine,Is it possible to say which one is a motor and which one is a generator? How would you certain this?

3 Answers  

---

How open delta used for protection?

4 Answers  

---

Any formula to calculate neutral current in 3 phase 4 wire system

1 Answers  

---

can we do the star delta connection of capacitor for 3- phase motor starter.

0 Answers  

---

What are the protections for HT Motors?

1 Answers   BARC,

---