why we remove capacitor connection in 3 ph Induction Motor
while taking noload test.




Answers were Sorted based on User's Feedback



why we remove capacitor connection in 3 ph Induction Motor while taking noload test...

Answer / loboreliance2003

Actually the question should be why is the capacitor bank
connection to be removed from the motor before taking the
no load test. This has nothing to do with capacitor of
motor. 3Ph induction motors dont have capacitors to
start.These are only used for single phase motors.

The answer is that capacitor bank is provided on any
Inductive load due to power factor dipping to below0.8 and
sometimes even to 0.5. To improve the power factor we have
to connect the capacitor banks depending on the size of
motor.

But if motor is not run on load then it is not necessary to
connect the capacitor. Hence no load tests can be done
without having to connect the capacitor bank to the motor.

the other reason is that there is danger of over voltage
due to capcitor being connected then PF will be greater
than 1 which could damage the motor windings. I have faced
these motor burning problems due to this reason.

Is This Answer Correct ?    8 Yes 2 No

why we remove capacitor connection in 3 ph Induction Motor while taking noload test...

Answer / mukesh.k.sharma

plz send me ans on my mail id
mukesh.k.sharma@adityabirla.com

Is This Answer Correct ?    5 Yes 2 No

why we remove capacitor connection in 3 ph Induction Motor while taking noload test...

Answer / baskaran

no need to capacitor in 3phase induction motor.
if capacitor used means improve the powerfactor only..

Is This Answer Correct ?    3 Yes 1 No




why we remove capacitor connection in 3 ph Induction Motor while taking noload test...

Answer / abhinav

i am not seen 3 phase induction motor require capasitor.

Is This Answer Correct ?    3 Yes 2 No

why we remove capacitor connection in 3 ph Induction Motor while taking noload test...

Answer / mas tachnocrat

hmm 3 phase inductin motor needs a capacitor; to improve
power factor or if u want to start 3 phase induction motor
from 2 phase
or noload test main capacitor kya kare gaa

Is This Answer Correct ?    2 Yes 2 No

why we remove capacitor connection in 3 ph Induction Motor while taking noload test...

Answer / raju

3 ph induction motor doesn't require any capacitor.in 1 ph induction motor require capacitor to divide a phase into two (as per double revolving field theory)so there is no need of capacitor

Is This Answer Correct ?    1 Yes 1 No

why we remove capacitor connection in 3 ph Induction Motor while taking noload test...

Answer / ramesh

i also face this ques pls send the ans

Is This Answer Correct ?    0 Yes 2 No

Post New Answer



More Electrical Engineering Interview Questions

What will happen if we give the 3 phase supply to the rotor of slipring induction motor?

3 Answers  


Can I use star delta connected induction motor for dual supply voltage?

0 Answers  


what is first pole to clear factor ?

3 Answers  


why 3 phase motors are preferable over single phase motors ?

6 Answers  


What is difference is of VSD,VFD,VSDS, are they the same as the direct current to control dc using above mention

0 Answers  






IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.

0 Answers  


DG Earth Value?

0 Answers   Vodafone, Reckitt Benckiser,


Why do we need ring main unit (RMU). what is its purpose and its advantages . what is the operating function of rmu

5 Answers   MahaDiscom,


what is surge impedance loading?

1 Answers  


why neutral should connect to earth in delta-star type transformer

4 Answers  


How to select busbar?

2 Answers  


what is the benift of HT metering & LT metering

1 Answers  






Categories
  • Civil Engineering Interview Questions Civil Engineering (4622)
  • Mechanical Engineering Interview Questions Mechanical Engineering (3695)
  • Electrical Engineering Interview Questions Electrical Engineering (15736)
  • Electronics Communications Interview Questions Electronics Communications (2633)
  • Chemical Engineering Interview Questions Chemical Engineering (761)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (79)
  • Bio Engineering Interview Questions Bio Engineering (30)
  • Metallurgy Interview Questions Metallurgy (95)
  • Industrial Engineering Interview Questions Industrial Engineering (199)
  • Instrumentation Interview Questions Instrumentation (2868)
  • Automobile Engineering Interview Questions Automobile Engineering (171)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (41)
  • Marine Engineering Interview Questions Marine Engineering (60)
  • Power Plant Engineering Interview Questions Power Plant Engineering (168)
  • Engineering AllOther Interview Questions Engineering AllOther (1331)