for selection of transformer we will considering 5 to 6 times of starting current of higher rating motor connected to secondary side. according to process wise we will start the motors gradually suppose if we will start 15 to 20 motors at a time wat will happen?

1 Answers  

---

Why single phase induction motors are not self starting ?

0 Answers  

---

why rating of motor in HP ?

2 Answers  

---

What are the causes of electrical faults?

1 Answers  

---

How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?

0 Answers  

---

what is the path of electron when a static electron is placed in a magnetic field?

1 Answers  

---

how to protect transformer

2 Answers  

---

what is difference between armoured cable and un armoured cable

2 Answers  

---

how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

0 Answers   Tyco,

---

define differential current and restraining current in relays. how to calculate it by mathematically? post the formulaes.

4 Answers   Siemens, VPEC,

---

If the rated speed of a d.c. Shunt motor is1440 r.p.m, which method of speed control would you suggested to obtain a speed of 1500 r.p.m?

0 Answers  

---

what is transformer

5 Answers   Aegis,

---