how is efficincy of the transformer is predermined

3 Answers  

---

what are the main differences of delta and star connection

5 Answers   Essar,

---

How is the Depth of Stator Slot being calculated for Synchronous Generator?

2 Answers  

---

Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.

0 Answers  

---

what you mean ct ratio? why use 400/5a,200/5a,150/5a ?

1 Answers  

---

---

What_is_mean_by_negative_dc_voltage? why we use -48v except +48v in DC power supply systems.

2 Answers   APEL, BSES,

---

i want to know is it possible to generate usefull power by coupling generator with motor & supply gives to motor by battery source then generator generates power. remove the battery source given to the motor & feed the supply from some of the generated power supply to the motor & motor runs continously. generator generate power contnously.is it possible ?

5 Answers   UltraTech,

---

What power factor maintain you maintain at u r organisation

14 Answers   Wheels India,

---

Hi All, I am working as a Technical executive in a MNC company and we have 1500KVA & 1250KVA T/F in our site, can you help me that how many maintenance tests can be conducted and what are the procedures included for the tests can you share yours answers and also give any web address to get more information on this

5 Answers   Hyundai,

---

why we are using auto transformer in sub station mostly???

2 Answers  

---

in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

0 Answers  

---

How many devices can be connected in one zone of FACP

0 Answers  

---