sindhejs

 Profile Answers by sindhejs Questions by sindhejs

• Feb 24th, 2009

 

To produce rotating magnetic field you?need atleast 2 phase system, that is done by capacitor(splitting the single phase into 2 phase).

mtpsmy

 Profile Answers by mtpsmy 

• Mar 4th, 2009

 

To increase the power factor

Raman Jain

 Profile Answers by Raman Jain Questions by Raman Jain

• Mar 6th, 2009

 

As the single phase winding can'nt produce starting torque , a Capacitor is used to create a vector which is 90 deg ahead . So the both will produce a torque .

manojprabu

 Profile Answers by manojprabu 

• Mar 22nd, 2009

 

In single phase induction motor polyphase winding are used for producing rotating magnetic field (single phase produces alternating flux only) to make motor self starting
Since capacitor is used for increasing the starting torque of motor.

R Raghavendran

 Profile Answers by R Raghavendran 

• Feb 26th, 2010

 

Single phase induction motors are not self starting because of absence of rotating magnetic field.  Hence single phase motors are equiped with auxillary winding along with Main winding and Capacitors to produce phase split of 90 Deg to produce torque sufficient enough to start the motor.  The capacitor may be permanently connected or disconnected once the motor starts.

jay shuklA

• Nov 25th, 2012

 

Capacitor is used in single phase induction motor because it improves the power factor of the supply which is given to the induction motor.

cmallick1201

 Profile Answers by cmallick1201 

• Jan 8th, 2013

 

For single phase induction motor due to presence of single phase it has two equal strength magnetic rotating field which are in opposite direction means cancel effect of each other so that it fails to create stating torque. By using capacitor single phase is splited into two phase which has 90 deg phase difference. So one of two rotating field become stronger than other and provide starting torque. Also it helps to improve power factor during starting as well as running.

SANJIT VERMA

• Jan 29th, 2013

 

We can use two capacitor in single phase induction motor.One in series of starting winding(to improve the starting torque so that they become self start) and 2nd is in series of running winding to improve the power factor.

devayan

• May 23rd, 2013

 

In case of single phase induction motor the stator has two winding- main winding and auxiliary winding . both of them are supplied by same source, to make a phase difference between them we use a capacitor between them..so it possible to make a capacitor start in single phase induction machine which used in domestic world largely.

binod kumar

• May 30th, 2013

 

To increase starting torque

shaik sharif

• Jun 5th, 2013

 

In generally capacitors are playing main role in electrical system.And also power factor improvement done by capacitors so therefore capacitors mainly using for increase the starting torque of the motor.

SONY RANJAN MAHAPATRA

• Jun 25th, 2013

 

basically function of capacitor is to improve the power factor and make the single phase motor self start having made split phase between both the winding(starting & running winding)