Why does the power consumed is always constant even if a fan
speed is altered?
- 5 Answers
- 19717 Views
- I also Faced
- E-Mail Answers
Answer Posted / rakesh
it must be clearly mentioned here that a fan always uses a
single phase capacitor run induction motor , where there
are two windings to provide the two phae supply to generate
the revolving magnetic field , the torque developed is
proportional to the prdct of starting current , main
current and the sine of the angle btwn them , nw whe we
increase the resistance betwn the main wndng and voltage
supply , the voltage remainds the same while the current
decreases , the electrical equivalent of the mech power
developed i.e eicos# decreases , thus power dusnt remain
constant
| Is This Answer Correct ? | 4 Yes | 3 No |
Post New Answer View All Answers
i need previous entrence exam papers of nhpc.
can any one provide me a connection wiring diagram for a DG set control panel along with BOM?
draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words
Why AC current leads voltage in capacitor and how?
what transformer we used normally and upto which kva?
What is the one main difference between ups & inverter ? And electrical engineering & electronics engineering ?
what is the function and use of cable differential protection relay?
how to differentiate a mpcb,mcb with a contactor? Explain their working operation
Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?
How maesure earth neutral value & how much maximum value value required in between earth & neutral.
How much ph is maintained of water resistance starter for slipring induction motor ?
EHV current carrying parts need to have smooth finish,then how can a 245kv GIS with emery finish can run so long?
1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?
Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com
Y phase plates are used in transmission line??? what is there need???
