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.

why we short ckt the secondry vo5tage/ winding in transfr and motor?

2 Answers  

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Hi everyone, I'm Lachuu, recently joined automation company as PLC Engineer. I have certain basic question, I request all big gurus and seniors to answer these question. Because this will be very helpful to me as well starters like me. How to design a control circuit (ex: pick & place - my current project) Yamaha robot PxYx series controller RCX222, using 6 cylinder double acting, plc keyence kv p16r 2 expansion unit for input and output each. How to select panel terminal mcb elcb powersupply. My main concern in some projects how to select dc power supply, mcb rcb(I came across dif bt b c d curves, but stil confusing, pls help me :-(. I would really appreciate all who are going respond to this question.

0 Answers  

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What do you mean by eddy current loss?

1 Answers  

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What are Line losses and how can be it minimized/controlled.?

2 Answers   Omega, XYZ,

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how can electricity is produced without water

6 Answers   Bescom,

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what is ht breaker

8 Answers  

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why dc power can not be used in transformer?

33 Answers   GE, Sail,

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We have 2 Nos. Transformer with the capacity of 2000KVA and 1250 KVA and currently using only one 2000KVA T/R during operational hours while non- operational hous 1250 KVA T/R also used to reduce T & D losses. Similarly, 2 capacitor bank of 500KVAR and 300 KVAR also installed to balance reactive power. Now problem is around 1000 KW load PF is not maintaning 0.99 as 350 KVAR capacitor is in healty condtion. Now the PF is maintain 0.95 to 0.96.

2 Answers  

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At what voltage domestic tubelight works?

2 Answers   Cigfil, L&T, MNC,

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What is the problem of internal failure in ship engine telegraph system norcontrol?

0 Answers   SAR,

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why we use 110vac in overhead crains? why not 220v, 24v

3 Answers   SOFT,

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if the stetor speed (N S) increase by 20% then the rotor speed will be increased by 20% is it true. ?

4 Answers  

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