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


can three phase induction motor rotate with only 2 phases
connected

Answers were Sorted based on User's Feedback



can three phase induction motor rotate with only 2 phases connected..

Answer / sri

If the motor is in idle condition and if u want to start
the motor and rotate it will give u a humming noise only
and will not rotate.But if it is already in running
condition and suddenly if it happens to run in the two
phase it will run ,and gradually it will get over heated
and at one stage it will trip or burn

Is This Answer Correct ?    90 Yes 3 No

can three phase induction motor rotate with only 2 phases connected..

Answer / ram kumar

yes

Is This Answer Correct ?    45 Yes 7 No

can three phase induction motor rotate with only 2 phases connected..

Answer / deependra shakya

Yes a three phase Induction motor can run by 2 phase.

Is This Answer Correct ?    42 Yes 8 No

can three phase induction motor rotate with only 2 phases connected..

Answer / jessy

Suppose 3 phase induction motor is running but if one phase
trips, it will continue to run but at reduced torque -
jessy

Is This Answer Correct ?    20 Yes 4 No

can three phase induction motor rotate with only 2 phases connected..

Answer / kandavel

yes, If the motor is in idle condition and if u want to
start
the motor and rotate it will give u a humming noise only
and will not rotate.But if it is already in running
condition and suddenly if it happens to run in the two
phase it will run ,and gradually it will get over heated
and at one stage it will trip or burn

Is This Answer Correct ?    17 Yes 3 No

can three phase induction motor rotate with only 2 phases connected..

Answer / ram

Yes possible. Using capacitors you can run three phase
induction motors with high current rating. Normal current
rating is 1.5 amphere per HP for each phase;but for two
phase it will go up to 2.0 to 2.5 amphere for each phase.

Method: You can use running capacitors with 440 rating.For 1
Hp you need 12- 15 mfd capacitor/for 5 HP you need 60-70
mfd.You can make new phase via this capacitor from any one
of the remaining phases, if motor runs in reverse connect
capacitor in the other phase. For starting you may have to
add additional 100 mfd in parallel with the capacitor
previously described via make break switch of suitable
current rating for a moment.

Is This Answer Correct ?    15 Yes 1 No

can three phase induction motor rotate with only 2 phases connected..

Answer / sandip

Yes,But in Lower Efficiency

Is This Answer Correct ?    11 Yes 4 No

can three phase induction motor rotate with only 2 phases connected..

Answer / dum

but sri, i have one experience, the motor was in idle
condition. but with only 2 phases it rotated. can anybody
explain how a rotating magnetic field is created when there
is only 2 phases

Is This Answer Correct ?    7 Yes 4 No

can three phase induction motor rotate with only 2 phases connected..

Answer / gunasekaran

IT will rotate because due to the phase displacement B/w
two phases so average value is no zero for two phase
circuit so torque will produce. at the same time it is not
running full speed and it draw around two times current
from sys so wdg of another two phase getting heated up if
it small motor OLR will give trip if it big one negative
sequence giving trip comment

Is This Answer Correct ?    3 Yes 2 No

can three phase induction motor rotate with only 2 phases connected..

Answer / bhasheer

only two phase will never create rmf in three phase motor... we need a capacitor to create three phase rmf. while using the capacitor the motor starts to rotate but the starting torque will reduces....



During the normal running condition of three phase motor, if one phase fails, the motor will run continuously when there is no load in the shaft.


At the same time if the motor is connected through the starter,the over load relay in the starter trips and the motor will stops....

Is This Answer Correct ?    1 Yes 0 No

Post New Answer



More Electrical Engineering Interview Questions

why does the time taken for fuse to melt is longer as the wire length increases?

1 Answers  


which plant has high load factor

10 Answers   APTransco,


What are the main advantages of generalized error co-efficients?

0 Answers  


why capacitor takes more current

4 Answers  


The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?

0 Answers  






what is meaning of phase angle in two phase.

5 Answers  


Is it a better option to procure screw type air compressor rather than reciprocating air compressor?If so, what is the reason?How should we select an air compressor(100 CFM)? Please mention the important parameters of air compressor.

0 Answers  


If I have 3 essential main switch board and 3 incoming electricity ,but only 1 genset running is that possible.

0 Answers  


write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;

0 Answers  


While miss missed name platform fo electric motor how to calculate simple fourmul,?

1 Answers   ABB, ABC,


what is the common earth

0 Answers  


can we find the inductance of a induction motor?

0 Answers   Trident,






Categories
  • Civil Engineering Interview Questions Civil Engineering (5080)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4447)
  • Electrical Engineering Interview Questions Electrical Engineering (16619)
  • Electronics Communications Interview Questions Electronics Communications (3915)
  • Chemical Engineering Interview Questions Chemical Engineering (1093)
  • 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 (2993)
  • 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 (171)
  • 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 (1378)