how we can convert 3 phase to single phase without using any transformer

8 Answers  

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Why voltage regulation of an alternator is negative for a leading power factor?

3 Answers  

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how can you prove that in CE configuration a transistor has 180 degree phase shifted output

5 Answers   Bhel,

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how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

0 Answers  

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sir, in a industry present pf is 0.54 pf 25hp power is there its want improve 0.9 pf. which suitable capacity capacitor is suitable please inform me.

2 Answers  

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What cmos is and its benefits?

0 Answers  

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Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.

0 Answers   HPCL,

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The armature of shunt dc motor has 0.8ohm resistance and motor is to run on 120V circuit.If motor is suddenly thrown on circuit while armature at standstill then current drawn by motor will be??Also back emf in normal running is 110V

2 Answers  

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1)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?

5 Answers  

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Briefly describe your ideal job?

0 Answers   L&T, LPGCL, ONGC,

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why is  use the star and delta connection and difference

1 Answers  

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Please, if 1kw is equal to 1.25kva; how then do I know how many kva in 7.5kw?

0 Answers  

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