Answer Posted / satya srinivas

Syn motor - In Syn motors we have to give supply for both stator and rotor. And may rotor have permenant magnetic pole. So magnetic flux will produced in both. Then flux opposition will happen which results rotor to rotate.
When rotor magnetic South pole is attracted by stator north pole or vice vere magnetic locking will occur. Hence rotor will run in synchronous speed with R. M. F. So no slip will be there. It will be used in applications where constant speed is required.
Main draw back of synchronous motor is it's not self starting. seperate self starting mechanisms required.

what is earth-fault?when it occurs? to check where it occurs what type of test should we do?

2053

---

What is the Current equation in series RLC circuits.

1100

---

Why do we avoid electrical conduits in floors at apartments?

2129

---

In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)

11897

---

Why choke coil is connected in series with starter in tubelight??why starter is connected in parallel to tubelight??

3435

---

The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.

2026

---

what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?

2058

---

What is the difference between grid and off- grid system??

1997

---

what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?

2314

---

Why temperature rise is conducted in bus bars and isolators?

1417

---

What is the vector group of a transformer,how can it be found out?

2097

---

Control cables in S's will carry 1000v which is AC R DC? Pls answer me 

2196

---

how tto ingress mw in turbine explain.procedure ?

2386

---

What was the Dg set radiator and lube oil temperatures trip in ACB

1879

---

What is the RME and explain the full form and what is the RME work?

2892

---