Answer / vijayan

The core is laminated to minimize the eddy current losses
in ac circuits. The voltage applied in dc machine is dc,so
there is no eddy current losses, no need of laminations.

Answer / raja

I support answer 1. But in detail. The flux in the stator of
DC machine (Yoke, poles) is not a time varying one. So it
can't produce any induced emf in those structures. In turn
there is no possibility to have eddy current. And since
there is no reversal of pole there is no possibility of
hysteresis loss also. In turn there is no need to laminate
the core.

Answer / althaf

the voltage induced in the armature conductors is ac,even though it is a dc machine.so the core is to be laminated

Answer / s.sakthivel

(1) to develop the residual magnets


(2) it is act as a permanent pole compare then AC supply pole so we are not laminated stater pole

what is the reason for harmonics introduced in the line

2 Answers  

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If we know the load for generator in KW then how it will be change to amps and also if we know the load in amps how it will change in KW and what Generator is good for that...suppose load is 500 amps 3phase......??

1 Answers  

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What is kirchoff ’s current law (kcl)?

0 Answers  

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The CHARGED BATTERY GET DISCHARGED WHEN IT IS NOT IN USE FOR LONG TIME.GIVE REASON.

1 Answers  

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int a,b ; a=b=10 ; if(a>b){ printf ("%d",a)}; no error output is a=10

2 Answers   TCS,

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what type of motor is used in washing machine

8 Answers  

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hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .

0 Answers  

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how to select electronic timer(Star-Delta) setting for diff. rating motors

0 Answers   Getrag Ford Transmissions,

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what should be the value of helathy insulation b/w two cores of LT cable.

2 Answers  

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What is Nominal voltage?

3 Answers   Bhel, Equate,

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Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?

0 Answers  

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Why dose voltage rated at 11kva

1 Answers   TK Chemical Complex,

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