Answer Posted / r.s.nim

PI test measured the ability of the insulation to absorb
voltage over a period of time.This gives an indication of
the overall quality of insulation.

EXPLAIN METOD OF IMAGE OF TRANSMISSION LINE/ WHAT ARE ITS PRACTICAL APPLICATION?

1415

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Mention the difference between Analogue and Digital circuit?

674

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Why should be the frequency 50 hz 60hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50 hz 60hz?

693

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What is George phenomena to start the synchronus machine?

3641

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In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

1487

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What is non-minimum phase transfer function?

631

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how to find out 3 phase complex power in per unit in unbalanced system?

1565

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Write the force balance equation of ideal spring element.

768

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how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?

1571

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ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

1506

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Define coil span?

624

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Vibromotor 252MV 1/4HP2P..what is mean by 252MV?

1521

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can any tell me why slope 40% and 80% is calculated in differential protection?

1429

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What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current

1907

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PLZ EXPLAIN CORONA,SKIN,BIRD PALE,SPAN,SAG Effects of power cable.

1525

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