Answer / dr. surekha

Bolts are observer on the cover. these bolts are used to
hold poles. where as AC motors have smooth surface.

Presence of commutator at one of the end is s second
difference.

Answer / umang

1.For the same rating of motor , size of DC machine is
larger than AC machine
2.DC machine is identified by commutator
3.DC motors contains brush arrangement which sq.cage motor
is not having .

Answer / ankamsreekar

1.All DC machines are can be identified with commutator.

2.By seeing the cooling arrangement. since MOST of the DC
machines are provided with air blower for cooling. in case
of the AC machine end fan is provided.

Answer / karthick

dc machine can be identified by commmutator and bold net
arrangement


ac an be identified by slip ring or brush arrangement

What is the difference between earthing & neutral.

2 Answers  

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Which formation is better in transmission lines - horizontal or triangular and why ?

2 Answers  

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calculation of lad carryinc capacity of 6mm2 cross section wire in 415 voltage circuit. What will be the amps.

0 Answers   MAHINDRA,

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if dc motor can operate by ac supply ? if its possible means how ?

2 Answers  

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Merz-Price circulating current principles is more suitable for

1 Answers   Student,

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What is the usega of brking resistor? and how it will useful to Drive...?

3 Answers  

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How To increase Knowledge Of boliler regarding To Only Electrical Field..

0 Answers  

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hi this is hema, r there any books in particular for the preparation of the APPSC-A.E.E(electrical), if so please mail me the names ... thank u .

0 Answers   Vizag Steel,

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while we select CT, why the CT ratio is divided by 5?? ex:250/5,15VA,CLASS-1 CT.Why it is divided by 5??Help me please

2 Answers  

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how to calulate transformer secodary fault A?

1 Answers  

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Thumb rule of cable size(rm>30 rm)X multiplying factor=ampere

0 Answers   Kazi Farms, SKI Carbon Black,

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what are the protecyion of transformer & generators

0 Answers  

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