Interested to Buy Any Domain ? << Click Here >> for more details...
how we calculate the 30 KW 3phase electric motor current on
noload
- 23 Answers
- 153174 Views
- Monnet, Siemens, SSR, Supermac Industries, I also Faced
- E-Mail Answers
Answer Posted / r. n. sharma
Torque of a rotor depends on its diameter and weight along
with winding as well as material and methodology of
construction and also on applied bearings and lubrication. A
bulky, heavier rotor will draw more no load current than
small, light weight rotor. Formula : Torque (T) = qr (Where
q=Tangential force acting at PCD of winding due to effect of
current flowing through it, and r= distance of winding from
centre of the shaft). This torque only tries to rotate the
dead weight(W) of the rotor on no load. It can be said
T=qr=(W + rolling friction in bearings + wind resistance).
These all factors can be calculated easily and then finally
to arrive the result i.e. no load current, however bearing
frictional force and wind force can be ignored.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
How to calulate Locked rotor amper(LRA) for compressor type motors?
i have a 1500kVA transformer what is the kWH meter i need to use?
What is difference between Harmonic and Non harmonic Capacitor Bank?
difference between power surge and switching transient
critically criticize the application of ring main unit in power system
From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?
i have interview in Pepsi company what type of question will ask please send the question and answeer
Control cables in S's will carry 1000v which is AC R DC? Pls answer me
What is big transformer parts and their function ? Ty
What is super thermal power plant? and how it will differ from normal thermal power plant
DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?
The inventer is a battery, but if lost current at home u will turn on the fan but the is AC and inventer battery is dc . Then how the fan was rotating. What device Or machine in fan converst the Dc power to Ac power
700KW 6.6KV slip ring induction motor to use VFD to control the speed
does buccholz in a transformer use batteries
Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?
