Answer / aman kumar

Basically mcb /mccb work on electromagnetic induction so if dc voltage supply in it then tripping coil in mcb/mccb does not produce magnetic field and so not trip. so it was not work in short circuit condition
On other hand if overload current is high then bimetallic strip in mcb/mccb expand and disconnected the circuit.

With a phasor diagram show the effect of increasing the field current of a generator supplying a constant real power and connected to a grid system.

0 Answers   VECL,

---

what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?

0 Answers  

---

how we calculate capacitor bank mvar for 11 kv distribution networ , and i need releation between capacitor bank with voltage, frequency, current, pf

2 Answers  

---

difference between a four point starter and three point starter

9 Answers  

---

Is it possible to use AC supply insted of DC supply in trip coil operation? if not, why?

5 Answers   HAL,

---

HOW DOES THE PERCENTAGE DIFFERENTIAL PROTECTION WORK IN POWER TRANSFORMER

1 Answers  

---

Can we install and run MCCB suitable for 440v 3Phase 4wire system, on a 220V 3Phase 4Wire System.

3 Answers  

---

whether the generating voltage can be made to be transmitted by means of signals to the recieved end or at the consumers end?

6 Answers   TCS,

---

the winding of Gen and Motor is star or in delta ??? and why

1 Answers  

---

Comparing to AC transmission, corona & R in DC transmission is……. a) lower b) higher c) same

3 Answers  

---

should dc supply will give the transformer to build up the voltage level

1 Answers  

---

lamination figures

0 Answers  

---