Answer / milinda4p

It is simply a 3 phase wound rotor induction motor which is operated at locked rotor condition. Its rotor and stator winding terminal has come out where we can make external connections.
We can connect a 3 phase power supply side to the stator and observe the waveform at other side (rotor) (or vice versa).
There if we change the rotor position manually by rotating we can observe that the  phase angle difference between stator voltage and rotor voltage is increasing or decreasing (depending on the direction of rotation).
In the technical term this is called as "synchro differential transmitter"

Answer / praveen reddy.r

Transformer used to create a phase angle of alpha at
secondary side for controlling power flow in a parallel line
of transmission system,to avoid uneven loading in
transmission systems because of different line impedance's.

what is the difference between upper impedance and lower impedance distance relay?

3 Answers   Havells, Power Grid,

---

which type of capacitor store high amount of energy for long time ? ( polarized or unpolarized )

1 Answers  

---

What is transposition in a transmision line?

2 Answers  

---

In a overhead system why the voltage between line &ground is taken for basic comparison ?and in case of underground cables the comparison take only by the voltage between cables?

1 Answers   L&T,

---

Define active filter?

0 Answers  

---

Neutral to earth and phase to earth voltage how much.

2 Answers  

---

how many types of transformer.

3 Answers   Technocrats,

---

is KVAR (not reverse power) relay necessary to protect from excitor field failure on a brushless, synchroneus generator? Some people with previos experince tell me no but the manufacturers tell me it is designed for that purpose. Is it that it is only necessary for brushless generators and not the older style with the slip rings and brushes?

1 Answers  

---

which type of motor is used in lift ?

7 Answers  

---

generator(Deutz 550kv)is runing for 2 hours with load of 900 amp and then it goes in shutdown with alarm fault messege of speed fault although heirtz reading fixed at 50,what does that mean

1 Answers  

---

what is field flash

4 Answers   Bhel,

---

what is the working principle of three point starter of dc motor?

1 Answers   Ashok Leyland, Cap Gemini, Infosys, Just Dial,

---