Follow Our FB Page << CircleMedia.in >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...


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

Answers were Sorted based on User's Feedback



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

Answer / sridhar nayak

speed control
speed of motor N-120f/p*(1-s)
so sppe can be control by changing following parameter i.e
f,slip, p-number of pole

Is This Answer Correct ?    11 Yes 1 No

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

Answer / sunil kumar

THERE ARE MANY DRIVES ARE AVAILABLES FOR CONTROLLING THE
SPEED OF AC MOTORS SUCH AS VVVF DRIVES, SPRS,FLUID COUPLING
ETC.

Is This Answer Correct ?    3 Yes 0 No

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

Answer / pillay

the speed of an AC motor is dependent on number
of poles and frequency driving it as per the
speed formula already given by Mr sridher nayak
as SPEED =120f/p
So with the use of a frequency converter (vsd)one
can easily and safely vary the speed(by changing
the frequency to make the motor run at whatever
speed you want) OR
if your motor comes prewound with multiple pole
selectable winding, then with the help of change
over contactors you may have options for different
speed but they come with limitations in power and
fixed speed like 750,1000,1500 3000 rpm
Other means as rheostat, variable voltage and anything else will
not give you a safe, economical and reliable long term speed
control.

Is This Answer Correct ?    1 Yes 0 No

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

Answer / harish kumar

more then that above formula is there any thing

Is This Answer Correct ?    2 Yes 2 No

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

Answer / manikanta kumar gopi

I think as per the answer of Mr.G.sreenivasalareddy
Frequency control method and Rheostatic method are same.am
i correct?

Is This Answer Correct ?    1 Yes 1 No

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

Answer / srikanth

Speed of the 3 phase motor can be controlled by Variable
frequency drive. Speed should not be exceeding the rated
RPM of the motor.

Is This Answer Correct ?    0 Yes 0 No

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

Answer / g.sreenivasalareddy

Frequence control,Voltage control,rehostatic control

Is This Answer Correct ?    1 Yes 2 No

Post New Answer



More Electrical Engineering Interview Questions

Why are some relay circuts designed to have the ct current flow through the neutral instead of the phase wire, such as in some diff relays?

1 Answers  


what is the function of a commutator in a dc generator?

14 Answers   College School Exams Tests, NTPC, TCS,


a 50hz motor to give 60hz whats happening in motor.what happen the motor.

6 Answers  


why the starting current of a motor is high?

3 Answers   ITC Infotech,


In CTs tan delta point should be earthed , what is the reason behind it?

0 Answers  






what is the difference between earth and neutral.

9 Answers   DLF,


i have a wire.and the current flowing in that.when we cut the wire then why dont we seen the elactrons....

8 Answers   GM General Motors,


Salient pole alternator is more stable, why?

0 Answers  


the current which flows during lightening is ac or dc,,,,,,,,,,, WHY

6 Answers  


What sort of protection scheme do you suggest for the protection of a 10 HP motor?

1 Answers   Chevron,


What do you mean by a phase angel of instrument transformer?

0 Answers  


WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SIZES??

14 Answers   Dubai Group, Saudi Delta Groups, Savitha Electricals,






Categories
  • Civil Engineering Interview Questions Civil Engineering (5075)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4444)
  • Electrical Engineering Interview Questions Electrical Engineering (16598)
  • Electronics Communications Interview Questions Electronics Communications (3915)
  • Chemical Engineering Interview Questions Chemical Engineering (1092)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (214)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (258)
  • Instrumentation Interview Questions Instrumentation (2987)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (123)
  • Power Plant Engineering Interview Questions Power Plant Engineering (170)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (0)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1377)