Answer Posted / rahul

servomotors are used to control the mechanical position.

Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

2549

---

what is vtg limit of earth and neutral at transformer side?

1994

---

why do we carry out winding resistance test?

2243

---

ratings of lightning arrester

2011

---

i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula

2160

---

if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

1832

---

what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?

2067

---

What is meaning of out of phase (making & breaking) capacity And how to calculate

2170

---

what is doid

2771

---

Z transform is use when system is not a) converges b) diverges

1632

---

i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.

1881

---

1.what is the reason for transformer and lightning arrester blast in 33kv system

3051

---

I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....

2029

---

Is a 300w induction motor used in a food processor as powerful as a 1000w DC motor.

2171

---

can anyone provide me a amf panel control wiring using ec-2 relay?

2228

---