Answer / ashok

A single phase power supply has two "hot" legs or conductors which have a sine wave that are 180 degrees apart.
A three phase power supply has three "hot" conductors which have a sine wave that are 120 degrees apart.

Answer / nancy

In 3 phase,there are 3 wires from line and neutral but in 2
phase only two live wire are there

Answer / lovkush rastogi

A single phase has no neutral point but A three phase has neutral point,
so,that causes a single phase indutoin motor doesn't self start & A/C to the three phase wireing of domestic houses in three phases.

Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

0 Answers   Pride Hotels,

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How can we calculate single phase load into three phase load

2 Answers   Jindal, Tanfac,

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How to checking sld drawingas and control drawings

1 Answers  

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when we connect a CT in the line will there be any loses in the line due to the mutual inductance of the CT.

1 Answers  

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i alternator which of genarator used for excitor the what is reason?

3 Answers  

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what is the use of capacitor in online ups?

6 Answers   Emerson, ups,

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what happens if the phase sequence of parrlel connected sys will changed & phase displacement

1 Answers  

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What does the temperature (30 deg or 35 deg celcius) mark on conservator of transformer indicates?

2 Answers   MahaGenco,

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Which is remain unchanged in transformer action?

6 Answers   NTPC,

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hi, i finished b.tech eee in 2008, im worked in dg sets mfg company , now i left job in 6months back, now again i want get job core side, how can i get? is there any couses we have learn to get better oppurtunity? /

0 Answers  

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What is the accepted limit to increase the choosen transformer capacity over the load and why ?

2 Answers   Asec,

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what happens when power factor leads or lags to electical or home appliances

2 Answers  

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