Answer Posted / riyaz

auto mains faluar mins change over beetwen geb to standby dg in auto in few second. in condition the power supply faluar to geb and thet time automatic chang over to dg . And mains supply coming so automatic change over dg to geb and dg auto stop in few mini after cooldown time.

I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

1807

---

State the other types of Air Conditioners?

2037

---

Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?

1965

---

what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks

1880

---

The simple way of finding the leakage quantity and % in compressed air distribution system

1654

---

Why reactors use before incoming of ac vvfd drive?

1840

---

hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible

1820

---

In a synchronous motor. if start is running at high speed.  What will be the starting torque : Higher Lower Zero

1704

---

What are the characteristics of negative feedback?

1038

---

I am abt to give IOCL intrv.Plz sir guide me for IOCL intrvw (Electrical).Which subject to be consider. questions are generally asked from which subject.Plz help me out.

1984

---

We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.

1978

---

What is mason's gain formula?

1287

---

How work of capacitor in dc supply...???

1587

---

What is rotating magnetic field?Discuss elaborately.

2625

---

witch pump used in wtp

2090

---