What is the difference between emf, voltage drop and potential difference?

4 Answers  

---

How to calculate no of EARTH PIT? Describe the formula as per IS standard?

0 Answers  

---

how to test the turn ratio of 3 phase transformer using volt meter shoe the curcit diagram.

0 Answers  

---

what is the series parallel connection of capacitors? and how can we use these application in three phase motors for controlling torque?

0 Answers  

---

WAT IS MEANT BY COLD AND HOT START OF A MOTOR?? HOW DOES IT AFFECT A MOTOR'S PERFORMANCE??

4 Answers  

---

---

why the stator is not laminated in DC machines?

4 Answers  

---

How many types of losses occur in a transformer?

0 Answers  

---

last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?

1 Answers   Siemens,

---

hopkinson's test

5 Answers   Bhel, NTPC,

---

Explain what is electric traction?

0 Answers  

---

Why is the earth fault relay connected to the Yellow Phase?

4 Answers  

---

In case of legging current of 20°, pf is .94 and leading of 20°,pf is .94 , in mathematicaly both are same but in realy how it is differ ?

3 Answers  

---