Answer / k.prakashchandra

PT or measuring unit of the AVR

Answer / gm khan

If isolation transforms are not working proper.

what is the difference between relay and a contactor.

5 Answers   Siemens,

---

What happens to the terminal voltage of an alternator connected to a bus bar when it is suddenly disconnected from the bus bar??

2 Answers  

---

Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............

0 Answers  

---

How we can calculate the consumption in kwh of motor on basis of kw @100% load, @50% load & @ no load.

0 Answers   Grasim,

---

what may the reason for vector shift in a generator?

0 Answers  

---

what is the diffrence between capasitor and battery?

2 Answers  

---

what is the different between rms and average value

1 Answers   Finolex, TATA,

---

What is the real use of reactive power in a electrical system other than loss (inductive &capacitive).I want to know its real physical significance.

0 Answers  

---

define main transformer?

7 Answers  

---

What are the protections to be used for Generator?

5 Answers  

---

Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.

0 Answers   HAL,

---

can u tell the difference between star-star transformer and delta to delta transformer.

3 Answers   Videocon,

---