Answer / [pp

to reverse the current through the rotating coilseach half
turn or to step up the voltage frm the electrical sourceor
to convert the motor into an

Answer / saravanan

in dc motor commutator converted AC to DC
it is also used to collect the current from the winding

What is the meaning of Insulation H for transformers????

0 Answers  

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Are you connected Transformer neutral eathing with it's body earthing or earthing met of switch yard.? Yes or No ? why ?

2 Answers  

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when we change tha taps from 1-16 in 100mva tr whether a constant voltage avaliable till it reaches tap 16 or voltage change as per taps change

1 Answers  

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what is frequency? and its importance

3 Answers  

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what is purpose of using reactor in substations

4 Answers   NCC,

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a voltmeter shows 100v..wat is to be done to make it read 150v.

7 Answers  

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we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?

0 Answers   Siemens,

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What will happen if DC supply is given on the primary of a transformer?

6 Answers  

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H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....

0 Answers   Essar,

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when we increased the current what do ?

0 Answers  

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How to calculate wire length,size & current? ( related to control panel)

0 Answers   FSS, GK Controls, Panel Tech,

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1 unit or 1 kwh means how much kva

7 Answers   TATA,

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