why the desirable efficiency for a motor is 60%, but in case of transformer, it is above 90%?

1 Answers  

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transformer phasor diagram under load explain it?

0 Answers  

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What is encoder, how it function

9 Answers   Coca Cola,

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Why electrons flow only one direction in semiconductors. why can not flow both directions

1 Answers  

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For Eg a 30 kw motor at full load how much kw it takes And at no load how much KW it will take?

1 Answers   GEPL,

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how electrical earthing maintenance done in industry?

0 Answers   L&T,

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what is nuetral grounding

2 Answers  

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if u have single phase load (un balance) and the main power cable is 3.5core means netural is .5 of phase and can the three phase current make the return paht in .5 neutral.

1 Answers  

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why there is a temperature rise at different metal to metal contact at cable lug??suppose cable is aluminium and the lug is copper,than why the temperature rise takes place??

2 Answers   JK Cement,

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Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

0 Answers  

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My energy meter ratio is -/110/root 3,1A and connected line CT is 100/1,PT is 11kv/110 so what is the MF for meter

1 Answers   Apollo,

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How much sq,mm cable need for 800 amps load

2 Answers  

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