Answer / sapkota

In western countries the rms value of the supply voltage is low (110 V). but in asian countries like India it is 230V.

if a bird sits on the service wire it didn't get shock then why the human get shock when he touches it(assume that human is not on the ground and any object i.e. in space)?

5 Answers  

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explain why the secondary terminal of current transformer should not be lift open circuited.

2 Answers  

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I am working as maintenance engg. in electrical but i want to do carrier in electrical drawing.Tell me about that.

2 Answers  

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what is anti-pumping relay and the significance of it in a switcgear cb control system?

1 Answers  

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how to decide the rating of the ct for 1500 kva transformer

1 Answers  

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What is the different type of class in CTS and why it is required

2 Answers  

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What is the purpose of Vector Group in transformer?

1 Answers   Andritz, ThyssenKrupp,

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What do you mean by 4.44 in this transformer equetion E=4.44 nfqm

4 Answers   Bharat Bijlee,

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we the the value of frequency is 50 HZ in DG then why we said the value inductive rectance is zero in DG?

1 Answers  

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What is the effect of impedance on the heat losses in case of AC system??? Does heat losses really depends on the impedance or depends only on resistive component only..??

4 Answers  

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why the admittance matrix or y bus matrix of a large network is called sparse matrix?

3 Answers  

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My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

0 Answers   Premier,

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