how to distinguish between ac motor and dc motor without seeing name plate of it.only seeing its getup look

3 Answers   Nahar, Siemens,

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at what condition restricted earth fault relay will act?

1 Answers   Equate,

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define excitaton voltage and excitation current?

2 Answers   Allied Group,

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Pure inductive ckt takes power from AC when 1. Applied voltage and Current increases 2. applied voltage and current decreses 3. voltage decreases and current decreases please justify

2 Answers  

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1.generator rated as 1000 mva,11kv .8 pf what will 0.8 pf will indicate? 1.max pf it can supply 2.min pf it can supply like this 4 options there what is answer.explain

5 Answers   Power Grid,

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why asa method ZPF method is more accurate than ASA method?

0 Answers  

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Where there is voltage,there must be current.Is this right or wrong??

10 Answers  

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why transformer measures in kva

4 Answers  

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how can we chack a capacitor in acircuit

2 Answers  

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why two fuses are used in battery charging room?one in positive line and the other in negative line?do any DC system require two fuses?

1 Answers   HPCL,

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plz tell me about for how many rating (for 500kva)how much current taken?

13 Answers  

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what is the formula for 3 phase motor starting cureent deatials 3phase 148A delta 415v, efficiancy 94% can we run the motor with 200A incoming supply

2 Answers  

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