Answer Posted / sivaraman

Why not we connect HT Motor in Delta also.i am working like
this type of motors only. But starting current has 6 times
of the full load current for our motors. it may decrease
and increase as per IS ( depending on the Capacity also ).

why in the three pin plug all 3 pins are cutted ?

2069

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how electrical earthing maintenance done in industry?

1687

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My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

1931

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what is meant by tranformer impedance?

2652

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In radial network the source is fed from 1 end both ends at central

2166

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what is diff. between earthing grid,earthing mess, earting grid?

2449

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how can i determine the gear ratio for a rack and pinion system if an electronic gate operated by an electric motor is to travel a distance of 5meters in 15 seconds.

2086

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During underground cabling in landscape area what did we cover the cable with to prevent the electric shock & protect the cable?

1923

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What do you mean by a current transformer?

1147

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what is the meaning of osr in transformer.

2221

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1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

2741

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WHAT IS THE WORKING PRINCIPLE OF A GENERATER.how is a GTG (Gas TURBANE Generater) working.plz explane

2580

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What is thresh hold value of current?

2242

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pre arcing time of ehv breaker

2183

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What is acsr cable and where we use it?

1202

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