Answer / mritunjay singh yadav

capacitors provides the phase angle diffrence between
voltage and current so the rotating flux produces and it
gives starting torque to the motor.

Answer / balasubramanaym

capacitors provides the phase angle diffrence between
voltage and current so the rotating flux produces and it
gives starting torque to the motor.

Answer / amolkarne

in case of 3ph motor three phases are having phase
difference of 120 Degree so its easy to produce rotating
force..
IN case of 1Ph motors due to only-one phase,it needs to be
produse phase difference for rotation Which is
achived by capacitor By producing phase delay....

Answer / rehan

just 2 shift the phase.... ...so now we get 2 phase....
<m talkin abt electrical phase ....> when 2 phase
alternating field comes in contact with rotor .....it
produce eddey current in it nd in turn torque is produced
.............

....in other words it will be a lyk saying 2 start the
motor .........
some single phase motors have ... rotatory switch ......for
them its used just 2 disconnect the 2nd filed ..connected 2
the capacitor

Answer / sunil mathur

Please let me know that how we calculate the size of
capacitor?

Answer / rehan

its a different thing .............

capacicance is calculated by the area of plate and distance
beetween them .and the dielectric(matterial)betewwn those
electric plates r dependent upon .......the value of
capacitanc e
just google the dderivation ...m out of touch on this topic

Answer / tahir bhatti

as the flux produce by a single phase alternates +ve and -ve. during +ve half cycle of flux, rotor of the motor try to move to one side to couple its megnetic poles to the stator poles (stator poles change at 50c/sec) but the next half cycle it try to move the other side to couple its megnetic poles to the stator poles, due to inertia and fastly change in megnetic pole does not allow the rotor to couple its megnetic poles to the stator alternating pole which results the failure of motor rotation. capacitor produce a split phase which make its own alternating flux 90 degree to the parent flux. thus as the orignal flux comes to its peak +ve value the split flux value become 0 degree.the rotor try to rotate one side and as the orignal flux comes to 180 the split flux by the capacitor comes to 90 and try to couple the megntic fields of rotor and stator.thus the rotor rotates

Answer / sudharvino

hi ramya ...did u find the correct answer for using
capacitior in single phase motors ????????

Answer / mukesh sharma

Because required phase difference angle for a single phase
motor should be 180 degree.
so, 90 degree legging due to inductor (because motor winding
is inductive) & 90 degree Leading due to capacitor so,
total Phase difference = 90-(-90)=180 degree

Answer / suresh kumar

the phase angle differences between voltage and current so it rotating flux produces ,the rotating torque gives motor this is my theory

How to increase home power factor? Can we connect capacitor directly? How to select capacity of capacitor?

5 Answers  

hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .

0 Answers  

In a simple spur gear train, gears with 24, 48, 32, 72 and 96 teeth are in sequence. The gear with 24 teeth runs at 900 rpm. The speed in rpm of gear with 72 teeth is

1 Answers   Caterpillar,

why power generated only 11KV not more than???????? and why power up/down is multification of 11*?=??.??? foe Example 11/33,11/66,66/11KV etc,

8 Answers   Essar,

What is the difference between electrical earthing and electrical grounding?

0 Answers  

what methods are used to improve power factor?

3 Answers  

what are types of encoder

0 Answers  

HAI,I HAVE 6,60KW MOTOR FEEDERS IN MY MCC PANEL.HOW CAN I DO MY SETTINGS FOR OVERLOAD,SHORTCIRCUIT,GROUNGFAULT,INSTANTANEOUS TRIP FUNCTION IN MY 4000A CIRCUIT BREAKER?

1 Answers  

i have 1500 kva generator how much maximum load avilable of use

1 Answers   Dr Reddys,

I HAVE 2 nO'S OF SYSTEMS, HOW MUCH UPS CAPACITY REQUIRED ALONG WITH 400WATTS ANOTHER LOAD? PLEASE GIVE THE FORMULA?

1 Answers  

what is difference between speed mode and torque mode in motor?? explain in simple words please.

0 Answers   Toyota,

Why CTs are connected in star on T/F delta connected winding side & in delta on T/F star connected winding side for T/F differential protection?

2 Answers