Answer Posted / hari krishna maganti

we r not useing always 2 or 3 phase suply..
for singie phase suply neutral is must.....

What are the advantages of the three-phase motor over single phase motor?

1044

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I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

1855

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In a tap changing transformer where is the tap connected, is it connected in the primary side or secondary side?

1118

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how to get electrical supervisour certificate in gujarat

1944

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What is the main use of rotary phase converter ?

1127

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I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.

2087

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Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?

1891

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What is ramp signal?

1089

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We have 110Vac ,10A ac supply which is converted into 110VDC & How much DC current? which factor is reqired for dc current calulation?

5120

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What is DC series motor?

1253

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salam&hi, i need to know about how can i calculate an enough current for the new building before i submit it to the suppliers

2066

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Can anybody tell abt concrete encased earthing or grounding?

2043

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What is electrical cable termination

2607

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HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?

2027

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Explain Energy and Power signals?

1748

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