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

How to calculate the motor winding resistance ?

Answers were Sorted based on User's Feedback

How to calculate the motor winding resistance ?..

Answer / sudheer

disconnect the motor connections and separate the wires and
check the resistance with multi meter of all winding

Is This Answer Correct ?    219 Yes 50 No

How to calculate the motor winding resistance ?..

Answer / dharmendra raninga

Please give the answer of this que.

Is This Answer Correct ?    99 Yes 55 No

How to calculate the motor winding resistance ?..

Answer / m.ramesh

how to calculate the motor winding resistance

Is This Answer Correct ?    16 Yes 6 No

How to calculate the motor winding resistance ?..

Answer / manik shinde

first apply the reted voltage & current then once we know
the v & I by voltmeter & ammeter, calculate resistance by

Is This Answer Correct ?    91 Yes 83 No

How to calculate the motor winding resistance ?..

Answer / mike

you can find the resistane by using ohms law but that only
applies to a resistive load. ie.,electric heaters. for an
inductive load you'll have to call manufacture or use an
ohm meter. on a three phase motor the resistance on all
three legs should read the same or very close and on a
single phase the run and common should equal up to what
your start winding ohms are

Is This Answer Correct ?    13 Yes 5 No

How to calculate the motor winding resistance ?..

Answer / myo

The static resistance for the stator you can simply connect
the multimeter between 2 phases and arrive at the phase
resistance. Usually motors windings are delta connected. You
multimeter reading is 2/3x phase resistance.As for the rotor a
squirrel gauge motor has no rotor windings and slip ring
motors have windings connected to slip rings. In the second
case apply the same principle if you know whether the
windings are star or delta connected. For complete
determination of the equivalent equivalent circuit conduct the
no-load and blocked rotor tests.

Is This Answer Correct ?    33 Yes 27 No

How to calculate the motor winding resistance ?..

Answer / gunasekaran

first we have calculate the efficiency.
then we calculate the core loss.
loss is Isqr*R
we know load current and loss then we can calculate the wdg
resistance of the motor this is app.method not correct.
for transformer also same like that.
we can get the loss and efficiency of the motor from

Is This Answer Correct ?    22 Yes 16 No

How to calculate the motor winding resistance ?..

Answer / ashour ghareeb

dc motor has four wire tow for field and other for armature
SERIES-WOUND motor resistance is:
~100 &#8486;
~1 &#8486;

Is This Answer Correct ?    5 Yes 3 No

How to calculate the motor winding resistance ?..

Answer / ramesh ravichandran

in case you want to calculate induction motor winding resistance..
to get accurate value of DC resistance, firstly do block rotor test so winding of the motor get heated up at rated current..
immediately remove AC supply lines and connect DC lines across any two phase and apply 50 percent of the rated current of the IM to get the accurate DC resistance

convert the DC resistance into AC resistance by a factor of 1.2..

Is This Answer Correct ?    5 Yes 5 No

How to calculate the motor winding resistance ?..

Answer / muhammad kamran

although ohm-meter test is thorough enough but its not find true result 1st ohm-meter reading is
taken and then in 2nd step a low voltage ac signal is
applied (using step-down transformer)normally 6:1 of
original operating voltage both voltage and current is
taken and Z-l(total impedence is taken) as unit is
performing in ac region not dc while ohm meter is dc
test.... why use this test?
not always the clear result is given by ohm meter test. a
winding may show balance state by ohm-meter but any
irregularity can be detected by AC-impedence test to be sure

Is This Answer Correct ?    14 Yes 15 No

Post New Answer

More Electrical Engineering Interview Questions

what is the diff.between neutral and earth?

4 Answers  

Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1.  H1-H2 = H2-H3 H3-H1 2.  H2-H3 = H3-H1 H1-H2 3.  H3-H1 = H1-H2 H2-H3 For the LV side also: 4.  X1-X0 = X2-X0 X3-X0 5.  X2-X0 = X3-X0 X1-X0 6.  X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0  H2-H0  H3-H0    X0-X1  X0-X2  X0-X3 128.0  119.9  7.2      29.2   13.3   15.8 70.7   128.4  59.2     23.4   22.0   3.6 7.2    120.1  128.1    13.4   29.3   15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?

0 Answers  

i completed my b.tee(eee) in 2009, but i did not join any job, i joined in my father business, now i want to join any good job, please suggest any course for me

1 Answers  

Hi guys! Plz help me to answer the following questions. 1. What are the types of transmission line energy losses? 2. Why are the VLF are used some types of services? 3. What frequencies are used for reliable beyond the horizon terrestrial communication without repeaters? 4. To permit selection of 1 out 16 equi-probable, what is the number of bitis required? 5. What is the most common modulation used for telegraphy? 6. What is the multiplexing is used to increase the capacity of the optic fiber? Thanks

0 Answers  

How many turns are there in primary winding? (In Transformer)

0 Answers   Philips,

what kvrah y we need to take the readind of that

0 Answers  

We have one Energy meter for Measuring the voltage,current,power,energy(KWH,KVARH,KVAH) & power factor.The problem is that the meter does not show whether the PF is lagging or leading.So i want to know that is there any way or calculation to find out that whether the PF sign (lagging or leading) depending upon the above mentioned parameters?

4 Answers  

why we use MV panels??? what's r all the needs

4 Answers  

if 50hz transformer is required to be run on 50% frequency what needs to be done???????????

6 Answers   century,

why we are having many type of vector group in the transformer ,what is the use of it?

2 Answers  

why the capacity of power plant is given in MW though the generators are rated in MVA?

3 Answers   TATA,

A three phase load, around 4 km away from the 11/0.433KV distribution transformer (Neutral of Transformer is solidily earthed) and consisting of mainly very costly and sensitive electronic equipments is giving trouble due to high voltage difference between neutral and body earth. Whether this problem can addressed by connecting neutral at the load point solidly to earth?

3 Answers  

  • Civil Engineering Interview Questions Civil Engineering (5081)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4448)
  • Electrical Engineering Interview Questions Electrical Engineering (16623)
  • 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 (259)
  • Instrumentation Interview Questions Instrumentation (3008)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • 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 (1379)