Answer / dinesh kumar

Rotor induced current frequency varies with speed and is
equal to s*f where s = slip and f is the frequency at
standstill. So at full speed the rotor current frequency is
very low. It is just like dc current.Thus the rotor current
can't be measured with ordinary tong tester. This will so
you very low value, although the current is high as marked
on motor name plate.

i need project topics along with circuit diagram in the electrical and electronics engg and also some websites regarding projets.

0 Answers  

---

What is voltage divider rule?

0 Answers  

---

Why CT secondary is grounded?

4 Answers  

---

What are motor generator sets and explain the different ways the motor generator set can be used ?

0 Answers  

---

what is transformer

7 Answers   Hofincons,

---

---

At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?

0 Answers  

---

which type of amplifiers are used in multimete?

0 Answers   NTPC,

---

Your B.tech marks is being given in CGPA grade. How is it calculated?

1 Answers  

---

How to connect the earthing in aircraft?

1 Answers  

---

What is the meaning of EDO in DG panels?

3 Answers   Bajaj,

---

what is the difference between MCB & MCCB

3 Answers  

---

Does the Impedance of the source affects the THD

1 Answers  

---