Answer / purusttom

harmonics 3d pluse

Answer / manisand1

harmonic pulses is basically called the harmonic distortion
and this takes place mostly in the rectifiers during its
distortion the frquency goes multiple.

Suppose the frequency is 50hz then this would be = 50, 100,
200, 400 ans so on.

for 8 mva 33/11 kv transformer what will be the setting of differential relay on which it trip & what is the HF setting in this relay

2 Answers  

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If i have two 3000 kW motors and the whole facility requires a 10 MVA transformer. What would be better installing two 5 MVA transformers(one for 1 motor ) or just a single 10 MVA transformer for both of them. Give reasons for your answer.

4 Answers  

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Which rccb 30ma,100ma,300ma sensitivity should be used in domestic line and what is difference, advantage and disadvantage of all three

2 Answers  

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what is the use of providing earthing for tanks? i know for lightning we use earthing ? Here one of my ONGC project there is no need of lightning protection and there is no power connection near by tank in that situation also ONGC asking earthing for tanks but we didn't understanding why they asking earthing? is anybody tell exact answer?

4 Answers  

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There is air in a room . the top and bottom of the room are at constant temp. T1 and T2. DRAW THE temp profiles if a. T1 greater than T2 b. T1 less than T2

0 Answers  

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What is distance protection relay? where & why we use this relay?

2 Answers   Siemens, UltraTech, Voltech,

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compare between starting charactristics of synchronous motor with those of 3Q Squirrel cage induction motor

0 Answers  

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what is value of Jin transformer

0 Answers  

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what happen ,if generator will generate leading power factor?

6 Answers   CD, NTPC,

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what do w do when the output of generator is fluctuating?

0 Answers  

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A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.

0 Answers   TCS,

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why we measure output of transformer in kva?

1 Answers  

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