Answer / javad

suppose the field is rotating and the armature is
stationary,we r applying dc to field. consider a single
conductor of armature. according to that conductor,while
rotor rotate say north pole is coming and have maximum
intensity then to low afterthat south pole is coming maximum
valu then minimu again norht. ie with respect to that
conductor it feel a sinusoidal flux.
if we are applied ac then we will not get sinusoidal
flux,hence cant produce sinusoidal emf.that is y.

hope my answer is correct

EXPLIAN THE IMPORTANCE OF POLY PHASE CIRCUIT.

0 Answers  

---

1.what is surge used in power system 2.what is switching used in power system 3.what is lightning used in power system

1 Answers   Areva,

---

explanation of mesh bus bars

0 Answers   Eskom,

---

What is working principal of V.C.B., O.C.B., A.C.B & Over load relay?

4 Answers   Unitech,

---

What is differance between Slip ring motor and Squirrel cage Motor ?

2 Answers  

---

In supply RYB are mentioned. But in transformers, why they are mentioning XYZ?

3 Answers  

---

Kindly Tell me name of the book for electrical estimation and costing ,calculation or web site to download

1 Answers   ABB,

---

Briefly define and explain the following different types of Pulse Amplitude Modulation (PAM) with some examples. i) 2-PAM ii) 4-PAM iii) 8-PAM iv) 16-PAM v) Quadrature Amplitude Modulation (QAM)

0 Answers   UOG,

---

How can we calculate the rating of a cable with formula?

2 Answers   TATA,

---

Why do we require transformer with less specific weight if supply frequency is increased?

0 Answers  

---

In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.

0 Answers  

---

I have 10 amp MCB for my air conditioner of 1.5 ton capacity. When I connect the ac direct it is started running but when connected through stabliser the Mcb Get trip and air conditioner couldn't start.please confirm whether Mcb is required to be upgraded to 20 amp. There is no fault in ac and the stabliser. Please advice the reason of tripping the mcb when connected through the stabliser.

1 Answers  

---