how to distinguish between ac motor and dc motor without
seeing name plate of it.only seeing its getup look
Answer Posted / ngarjuna
Name plate details are not there so by seeing the size only
we can determine .. for the same capacity always Dc motor is
heavy in size and the length also will be more (commutator
added in dc )...
| Is This Answer Correct ? | 18 Yes | 2 No |
Post New Answer View All Answers
Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?
Why in ESP Positive earthed
what is the size of cable for 15kw motor and 85 meter cable length using with vfd
The power factor of the fixed load is 0.8, now the p.f is varying from 0.8 to 0.5.
what is cogging and crawling
Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?
What is the current carrying capacity of 35sq.mm flexible cable?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING) I O (current operating)?
if i get a drop in my 1st year and the i clear my 2nd year and 3rd year all clear and i dont have any back logs so can i be able to sit in campus selection??
What mean by MLTP
We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?
Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?
what about SAP/MRP regarding manufacturing of electric motors and all drives?
What is the maximum operating temperature for a thermoplastic insulated cable?
what is the main function of capacitors in mccs.