Answer / kumar

generally in motor the over voltage,over current,over load &
winding damage problems will occur

Answer / sujit ril

Generally in any motor the following types of problems can
occure in Running condition :

under Voltage ( During motor start ),
over load ( If we couple a pump or compressor over rating
than motor so we put more load on motor during running ),
Some time undercurrent may also.

Rest as Mr. kumar said above winding damage also happen but
it is a physical damage.

All motor those being used in field allways being heated by
some auxilary supply voltage to avoid moisture contamination
on motor winding ( not required during running as being
heated by the main supply voltage ). Otherwise in a long
run the moisture can damage the winding insulation and
winding may be short circuited.

Answer / g.n.d.kennedy

I think, my friends are correct. However, the following
problems shall be consolidatively considered which would
occur for motors.

1. OVER VOLTAGE
2. OVER LOAD ( that is over curren resulting over heat}
3. disconnect of either one or two phase in case of 3 pahse
motor
4. Phase sequence reversal
5. Over speed
6. Earth fault

Answer / mahesh

under load vltg,
over load vltg.

Answer / guest

many type like 1

why we are using R,Y,B colours for 3 Phase ?

4 Answers   ITC Infotech,

the need of star to delta anddelta to star

2 Answers  

send me any model test paper of clerical post of state bank of india.......

0 Answers  

Whats the purpose of neutral earthing?

5 Answers   Electrical, Hindalco, TCS,

please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com

0 Answers  

What kind of earthing method can be useful for ships and boats ?

0 Answers   GE,

where solid grounding and where grounding through ngr done and why?

0 Answers   NTPC,

what role neutral plays in electrical circuit? If neutral is not there what will be the effect

1 Answers  

HT and LT cables can be laid on same cable tray

1 Answers  

What is Gnat,Ant,Rabbit &Dog overhead conductor? Please explain.

1 Answers  

please send me last 5 year interview questions

0 Answers   ONGC,

what are your career plans upon completion of the programme and the relevance of recity generation to your professional development?

0 Answers