Answer Posted / dinesh chaudhary

core losses are of two types i.e. hysteresis & eddy current
losse & hysteresis losses are directly proportional to the
frequency & eddy current losses are directly proportional
to the square of the frequency so, the losses will increase
that's why we cant use iron core transformer in high
frequency applications.

What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?

3957

---

1- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks

3380

---

What is the minimum distance to be maintained in between HT panel and LT panel and Instrument panel as per IEC and NEC standards?

1742

---

i want to know about torque of slip ring induction motor

2143

---

EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.

2039

---

Pls explan the OLR setting in VCB at HT yard

2697

---

for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?

1171

---

What is the best thing to protect the motor from running over full current. CT or O/L or pressure transducer at the given pressure rating

1551

---

In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]

1990

---

How to protect sensitive loads such as Dosing pumps inside a factory from voltage surge/voltage fluctuation.

1817

---

What is acsr cable and where we use it?

1170

---

how to store the thunder power?

4505

---

how slip power recovery system work

3037

---

What is the pro & con of having 11kv & 33kv incoming, and what is the adv & disadv. of converting from 11kv to 33kv.

2832

---

in power generator normaly voltagr betwween esth to neutral is 0 but my work place generator show the volatge is 60v any body know why? thanks

1910

---