we want low electricity at lower speed of fan.what we have
to do?

Answer Posted / chandra

We can reduce the supply voltage using thyristors.So, the
speed and power consumptions both are reduced.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

hi this is hema, r there any books in particular for the preparation of the APPSC-A.E.E(electrical), if so please mail me the names ... thank u .

1500


Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

1197


Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA

1411


When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?

1370


Q: How to calculate Transformer losses , tell us by Formula.

1520






how the B-H loop obtain under the static condition

1832


if the number of poles generated in stator and rotor side of an induction motor are different then what will happen and why?

1366


why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??

1539


there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1505


Is it advantages of having star-delta vfd than normal star vfd , if yes why?

1778


kVA rating of ordinary transformer is increased when connected as an auto transformer because A transformation ratio increased B secondary voltage increased C energy is transferred both inductively and conductively D secondary current increased

2162


Why in metering Ct for ammeters ct secondary side is grounded for each Ct but not in case of CBCT (Core balance current transformer)..kindly some1 highlights the reason..is it because net flux is zero?

973


What is evaporator & condencer & compressor

1740


how much maximum load a 2 core (Single phase) 16mm aluminium wire can take ?

2198


how to commissioning the genset with amf panel?

1909