what is soft starter? what is the difference between soft starter and star delta starter?

1 Answers  

---

how the vaccum ckt breaker workes..? how the arc is quenching in it?

1 Answers  

---

a solenoid of inductance 250mH and resistance 10ohm is connected to a battery. the time taken for the magnetic energy to reach 1/4th of its maximum value will be?

1 Answers   SSC,

---

total numbers of earthing of a transformer

1 Answers  

---

WHY WE NEED AUTO TRANSFORMER,WHERE WE CAN USE?

5 Answers   L&T,

---

---

what is the length of air terminal in lightening arrester system.

1 Answers  

---

can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?

0 Answers  

---

name the famous power plants present in A.P

1 Answers   Power Grid,

---

i need to connect fact device(any one from following upsc,sssc,svc,statcom and tcsc)in 14 bus system....by using MATLAB psat software....if i connect these fact devices,i will get some error as "virtual error"...i cnt rectify this error.if anybody know that how to work in psat,pls help me to rectify this error.... or send mail me to, viki0607@yahoo.co.in

1 Answers  

---

What is the Relation b/w star delta starter , DOL starter and two speed starter. if we want to rotate a 20 kw fan in 2 speeds which type of two speed starter we have 2 use?

1 Answers   ABB,

---

How to find the length of a Xlpe cable required to transmit 3mva load at 22kv.

1 Answers  

---

iam interesting to design the control panel for 3 phase pump motors by controling single phase switches.iam plan to use fuse,contactor & relay for motor protection .how can i select the voltage & amps rating for fuse,contactor & relay plz guide me .if anybody clarify my doubt means it will more helpful for my future .

1 Answers  

---