why US countries maintains 110v and 60HZ

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What is annunciator ?

1 Answers  

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WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.

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what is transformer?

4 Answers   Mphasis,

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What does ampere turns shows?

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IN 500 KVA TRANSFORMER 11KV/415 VOLTS HOW TO CALCULATE THE HT CABLE SIZE AND LT CABLE SIZE FROM TRANSFORMER TO LT PANNEL. AND HOW MANY MAINSWITCHES OR MCBS WITH RATING ARE TO BE PROVIDED

2 Answers   BSF,

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briefly explain the main blocks found in a microprocessor based system

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Why the resistance grounding (NGR) is better than Solid grounding?

5 Answers  

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What are the different types of VVVF Drive ?

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CALCULATE THE TOTAL VOLTAGE DROP AND SELECT THE CABLE SIZE IN MM-SQARE FOR A PANEL-262KW AT 110 METER FROM THE SOURCE SUPPLY , SUPPLY VOLTAGE 240/415

0 Answers   DEWA, Growth,

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For Eg a 30 kw motor at full load how much kw it takes And at no load how much KW it will take?

1 Answers   GEPL,

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What is a commutator?

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