Answer / a guru

The 3 phase delta/star 11,000/400 volt step down transformer has 40 turns per phase on primary. Find out the secondary turns.

usually why bettery voltage are 1.5V, even if you open a 9V battery there are six 1.5V batteries in series. is it not possible to increase this voltage other than putting in series

1 Answers  

---

How will you determine the rating of a motor for continuous duty variable load motor applications?

1 Answers  

---

On what principle reluctance motors work?

1 Answers  

---

what is the working principale of air circuit breaker ?

5 Answers  

---

tell me about vfd

8 Answers  

---

what is black out?,what is brown out?

1 Answers  

---

What happens if the series current double?

0 Answers  

---

what is the function of Choke?

9 Answers   Airport Electrical, Cummins, Tamco,

---

10Hp, 3-phase, 415v, 50Hz induction motor. The above motor is to run on Star-Delta connection, so how do i make following hardware selection 1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current or Line Current), 4) OLR, Please tell in detail how to do the above, so as to get the ans. of it even if the Hp rating changes.

1 Answers   Engro,

---

Am using an electronic digital display to see the RPM of ABB ACS 550 drive, which is showing negative value when the motor & drive in stop mode but it is showing correct value during the run mode. can anyone help me out??

2 Answers   Bala Power Solutions,

---

What is the selection & Designing procedure for DG/Transformer

4 Answers   Crompton Greaves, Sterling, TATA,

---

how are reversing the direction of dc motor

0 Answers  

---