Answer / k.prakashchandra

I think it is called so ,as the closed position remains in memory (( L M D ) to give ' auto trip ' indication .

why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

0 Answers  

---

why the substation require din electrical system?

1 Answers  

---

what will happen at the time of CT saturation?and what will be the Relay's function at the time of CT saturation?

2 Answers  

---

What can be a rating of a transformer(KVA) if the load is about 1000KW?illustrate by showing formula?

2 Answers  

---

what should be the no load current of an induction motor

2 Answers  

---

---

What is the formula for calculating transformer Efficiency?

2 Answers  

---

what are the methods of speed control of dc motor???

4 Answers  

---

What is CBCT ,why and whereit is used?

2 Answers  

---

What are the protections for safe running of electric generator?

0 Answers   Hetero,

---

what is the different between counterpoise earthing and pipe earthing?

1 Answers  

---

low voltage grounding is done by?? 1)solidly gnd 2)ressistance 3)reactance

1 Answers  

---

if 6 earth pit value is 1.5 ohm then what should be the number of earth pit to make the value .8 ohm

0 Answers  

---