for star delta connection,,why the contactor star not burn,when red,yellow and blue cable is looping.

2 Answers   Mahindra Water Utilities,

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What is the function of the circuit breaker failure relay?

0 Answers  

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in 3 phase (4 wire) star connection - is current pass through neutral??

7 Answers  

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in VFD when freq is reduce the voltage will reduceor not if it will reduced upto ...

8 Answers  

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A 3PH MOTOR RUNNING IN NORMAL CONDITION AND ITS AMPERE ALSO UNDER ITS FULL LOAD CURRENT,ITS CABLE RATINGS ALSO HIGER THN ITS CAPACITY,BUT ITS CABLE GETTING ABNORMAL HEAT(NOT TOO HOT)WHY ITS GETTING HOT LIK THIS?

5 Answers  

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What is Anemometer used to measure?

0 Answers   Blue Star,

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In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)

0 Answers  

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Why Two Transformers aside shoud be supperated by concreted wall?

5 Answers  

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what happens to the supply voltage if there is any change in frequency?

1 Answers   Gridco,

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Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer

0 Answers  

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DEAR SIR, HOW TO CALCULATE WELDING TRANSFORMER CAPACITY IN KW OR KVA (POWER). TWO WELDING TRANSFORMER USED WHAT TYPE OF DG SET CAPACITY LIKE ( 45 KVA OR 62.5 KVA), PLEASE TELL THE WELDING TRANSFORMER RATEINGS. I AM REFINARY (TANKS WELDING) THANKING YOU

2 Answers  

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What is mean by discrimination of circuit breaker ?

1 Answers  

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