Difference between single phase and three phase?

1 Answers  

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A 3 phase motor operating off 415V system is developing 20Kw at an efficiency of 0.77 and power factor of 0.73. determine:- a)the line current. b)the phase current if winding are delta connected. c)the phase voltage if winding are star connected.

1 Answers  

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Can you explain operating principle of Inverse Definite Minimum Time” (IDMT) relay

2 Answers  

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Why are iron cores in transformers made laminated?

0 Answers  

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WHAT IS THE SHOPE TESTING

2 Answers   TATA,

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Totally how much power will be consumed in 1 hour cotinuous running of electric train engine?

1 Answers   L&T,

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what is isolation Transformer?

8 Answers   HP,

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in the exciter the power is feeded from battry or control or whatever.and we need it in the generators for the stating . do we need it in the shutdown also?i mean the exciter>

2 Answers   Shell,

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I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i touch R phase, and then i touch Y phase using multimeter, the moment i touched, it blasts and that moment i got blindness. multimeter selector position is correct(750V AC MODE AND RED PROBE WASS IN v AND BLACK PROBE WASS IN COM. MODE. COULD ANYBODY GIVE ANSWER FOR THIS TO AVOID FURTHER ACCIDENTS PLEASE?

2 Answers  

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EARTH AND NEUTRAL ARE JOINTED OR NOT?

7 Answers  

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which braking is used in traction motor and what is its working send at mukeskumar27@hotmail.com

2 Answers  

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What are IP protections used for electrical panels, JB, equipments installed in explosive zones like Petrochemicals, Oil & gas

1 Answers  

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