can i have the methods of speed controls for 3 phase AC
MOTORS.

Answer Posted / g.sreenivasalareddy

Frequence control,Voltage control,rehostatic control

Is This Answer Correct ?    1 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the importance of earthing?

759


What range of speed can you get with the armature control method of speed control of d.c. Shunt motor?

723


It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

3190


why the pf of semiconductor device is improved the electrical devices

1516


Mention what are the types of semi-conductors?

825






when will be the iocl interview results ifaced the interview on september 8 th

1732


Testing report of Earthing of 3.15 MVa PTR.

2223


Does outdoor isolator loose connection cause short circuit current in that circuit? if yes then how ??

1325


any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

1937


what is the most permissible winding temp when we conducting a generator load test?(condition no load)

1323


why connecting surge unit in contactor coil

1489


please explain how to do 'pole drop test' on generator?

2492


What is called grain-oriented laminations?

711


what are the advantage and dis-advantage of 3 phase 4 wire energy meter?

1556


Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

718