Answer Posted / guest

It is increased the frequency 3 time more than supply frequency. For eg. Supply frequency is50hz then due to harmonics it will 150hz.

How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

2869

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If a 3 phase induction motor is in off condition in the conveyor and rotor of the motor keeps moving with the conveyor than the resistance of windings of motor varies. why is it so ??

1556

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How you will determine the volume of oil in a particular Distribution transformer.

1437

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why single phase to grd test in HV cable?why not 2 phase at a time?

1813

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how to interlock 3 nos MCCBs using under voltage coil. please provide me circuit diagram?

2155

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What is the difference between alternator and generator?

737

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What is meant by rotor?

802

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What are the function of different components of servo motor?

1552

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ult of expression 'document.FrmQF.myem

1656

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Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

1511

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what is the voltage between earth to neutral in lift.

1339

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we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???

1507

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how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

1896

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describe the phenomena of vacuum interruption in C.B

1247

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What do you mean by reach and reach the point of the relay?

799

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