What is vector group? What is meant by DYN11?Why is it needed?

13 Answers   Areva, Bhel, BRG, Escorts, Fortis,

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what is the formula to convert from KVAr to current?

1 Answers   Halcrow International Partnership,

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What is the mmf,rgt and ngt please brief completely

0 Answers   cpgn,

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In an ideal transformer no load primary current I0 A lags behind V1 by 90 degree B is in the phase with V1 C leads V1 by 90 degree D lags V1 by 45 degree

1 Answers  

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in a plug point why the hole size at the top is large?

9 Answers   Bhel, TCS,

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xfhnchncv?

0 Answers  

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1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

1 Answers   TVS,

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What is mean by earthed & unearthed cable? Voltage grade of 1.9/3.3 kV(E), 3.3/3.3 kV(UE), 3.8/6.6 kV(E)what it indicates??

2 Answers  

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What is the difference between earth fault protection of motor feeder with CBCT and Without CBCT ?

0 Answers   Enmas, Michelin, Reliance,

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A 100KVA SINGLE PHASE TRANSFORMER 10000/200V,50HZ REQUIRES 300V AT HV SIDE TO CIRCULATE FULL LOAD CURRENT WITH LV SHORT CIRCUITED.THE INTAKE IS 1000W.THE % OF REGULATION ON FULL LOAD AT 0.8 PF LAGGING WILL BE HOW MUCH AND THE SECONDARY TERMINAL VOLTAGE ON 0.8 PF LEADING WILL BE

0 Answers   IAS, TATA,

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How to take vector group test of a transformer? Suppose we dont know the vector group of transformer, how to check its vector group through test? I have 3 transformer DYn11 & DYno& Ynd11, how to confirm its vector group?

1 Answers  

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Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

0 Answers  

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