Answer / dayasagar

for star delta starter the thump rule is cable sizing to be 2 X motor KW ie 160 kw motor require 160 sq mm since 160 sq mm is standard size it is better to go for 185 sq mm this rule applies for all star delta motors. here you can go for higher size
for DOL or VFD driven motors 2 time the KW ie 320 sq mm is required since 320 sqmm is not standard size it is better to go for 300 sq mm here you can go at lower size

in HVDC transmission system ,monopolar link has one conductor usually a negative polarity and use ground or sea return ?through negative polarity we could pass electricity or not yes means how it is possible

1 Answers   Gyana, NNN,

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How to calculate MCB Breaking capacity.

0 Answers  

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what is the different between earth leakage relay and earth fault relay?

5 Answers   ME,

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For a stable system, where should the poles of a system be in a root loci plot?

0 Answers   GE,

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hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?

0 Answers  

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54 Comments Alok and Bhanu play the following min-max game. Given the expression N = 38 + X*(Y – Z) where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be?

0 Answers   Bajaj, TCS,

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why firewall is build up between two transformer (220/11kv,50MVA)?what should be the firewall height?what is the clearance between firewall and transformer?

2 Answers   Siemens, Tous Stadt,

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What is the working of SCM CT or purpose in genrator ?

3 Answers   Bhel,

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how to compute kvar in substation feeder to improve power factor and sending voltage

0 Answers  

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what is working of Master trip relay ?

9 Answers  

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what are the oils used in transformers cooling? n which type transformer is used in power systems?

1 Answers  

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When do you use a VFD motor?

3 Answers  

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