Interested to Buy Any Domain ? << Click Here >> for more details...
how we calculate the 30 KW 3phase electric motor current on
noload
- 23 Answers
- 154103 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
what is the difference between dry and wet type of 132kV terminations. which one is durable
What happen Grid EARTH plat got cut.
what are all the components required to assemble solar panel other than pv cell?
Define norton equivalent circuit?
Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.
CBCT selection
how we decide the require size is this for a known current at fuu load?
how to calculate earth fault relay current and CBCT ratio
what about the power of wattmeter at starting and loding?
How to decide and select the different earthing wire size for the different types of earthing
We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.
define displacement & magnitude ?
what kelvin's law ?
What Is HO factor in power selection
how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)
