Answer Posted / pandu

simply we use cvt.

Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.

1396

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Differentiate between induced emf and self inductance?

705

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1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

2167

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Define active filter?

678

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if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain

992

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Can we use shunt trip coil instead of trip coil with protection relay for protection?

1394

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Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?

1553

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i have install 750 kva distribution transformer at my site and want to do neutral earthing. what calculations should i follow to determine earthing conductor material and size?

1668

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What is grid collapse? what is the reason for it?

1665

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How halogen & merquery lamp works.

1774

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What is shutdown of electrical sub station?

2069

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What are dcs and plc?

754

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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?

4638

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If we need 4c× 50mm sq cable but it's not available so we can pull 4c×25mm sq two cables?

1048

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explain different types of d.c motors?

826

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