which circuit breaker enclosure is best for maintenance guy? 16 bolt & 20 bolt squre or 16,20 bolt hinge

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In a large office how do we calculate required number of light fittings, assuming fittings are 4x18W or 2x36W fluorescent fitting ?

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Who is the first Bangladeshi Everest climber? Where is his home district?

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Why we call cable rating in SQ.mm.If it is 240 SQ.mm how much the diameter possible?is there any calculation ?

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WHAT IS THE REASON,WE USED THREE CORE CABLE INSTEAD OF THREE SINGLE CORE CABLE.

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Hi,My name is ranms i want to know the machine vibration related problems.post me if any body knows. 1) Possible causes of machine horizontal vibration high? 2) Possible causes of machine vertical vibration high? 3) Possible causes of machine axial vibration high?

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what kvrah y we need to take the readind of that

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how the voltage between all the three phase is zero can any body explain me

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what are the components in electrical control panel (for example: 415V, 3-ph, panel to operate utility and 3-ph DG set).

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if the stetor speed (N S) increase by 20% then the rotor speed will be increased by 20% is it true. ?

4 Answers  

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What is maximum rating of transformer ?

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anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?

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