There are 2 motors without name plate and terminal but one
is DC motor and another is induction motor.How one can
identify which one is DC and which one is AC motor?
Answer Posted / jignesh mistry
Ac Motors Body construction is slotted where In Dc motors construction is plain.reasons are given below.
In ac motors armature is static therefor more current for cooling purpose fins are required,thats why on motor body slots are given.
In case of DC Motors Armature is rotating therefor heat produced due to armature current.there for cooling ventilation
is required.and field is static,and it takes very small amount of current so thre is no cooling requirement for that.
| Is This Answer Correct ? | 8 Yes | 3 No |
Post New Answer View All Answers
What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?
how does WTI work ?
why generator efficiency is more in swinburnes test?
what is the difference between circular wdg & ractangular wdg?
What is open delta Xformer? It's adavntages & Use?
what is the chemical name and formula of refrigarent R-134a.
how to Select its CORE in electrical cables based on its applications? or Application of various types of electrical cable based on it CORE?
it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?
WHAT IS DEAD END IN PROTECTION?
Why do we need interlocking in a HT metering or Ring main unit switchgear?
What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?
how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?
how braking & making capacity of circuit breaker are calculated?
hi frnds can any one help me ? plz send me placement paper of IOCL of Electrical streem .... plz send ....its urgent....
what is the diff. between x'mer , isolation x'mer & ultra-isolation x'mer ?????????????