Answer Posted / pinias munyongani j

VFD is used to vary the speed of the motor through varying
frequency. Where as a soft starter is used to smoothly
start up a motor. How ever VFDs can also achive smooth
start ups if the ramp up and ramp down times are increased.
Probably the main reason for using the soft starter is that
the cost is relatively lower than that of a VFD.

what is the differebt between ac and dc fuse?

2342

---

i karmveer bharti persuing b.tech . plz send me syllabus and name of reference books. for preparation of section eng.

2124

---

Explain the method to keep noises low in a control system?

1153

---

I need the list of Universities who have summer intake for BS degree in Electrical Engineering.?

2081

---

how to calculate earth fault relay current and CBCT ratio

8351

---

Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA

1839

---

how to Select Lighting arrester? What r the parameters to be considered for the selection of Lighting arrester ?

1744

---

why the colour of insultor stack , petticoat is brown. Is it has some technical reason.

2028

---

How many kinds of E.L.C.B and how to work E.L.C.B

2046

---

1.main parts of generator? what is used A-check,B-check,C- check? 2.what is FM200 system in data centers? 3.difference between pac,ahu?

2135

---

what is the standard duration after failure EB power

1840

---

what is the pulse and audio frequency transformer? what is different between induction regulators and tap changing transformer?

2118

---

12.5 tons a/c is their how much kva generator can recommend to the customer.

2038

---

Will any motor burn if voltage provided is lesser than the rated voltage???? If yes, then how is speed control possible with voltage control

2165

---

where are the circulat the diesel in DG parts name with pictue

2143

---