how on load transformer is chnage the Tapping ?

2 Answers  

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what will happen ac motor give to dc supply

9 Answers   Areva, College School Exams Tests,

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generally rectifying of ac tells. ac signel appear at phase and neutral with respect to frequency by -veand +cycles. but we doesn't experience shock with neutral in house hold ac??????.

1 Answers   ETA, RRR, TCS,

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We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob.that motor winding temp increase up to 135 deg.we want reduce this temp.what to do?we arrange ext.cooling fan but not much effect.we want reduce this temp. Inhouse without affecting much.cost. also don't want reWINDING OF MOTOR?

3 Answers  

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why we use low kv lightining arrester in line for example 9 kv using in 11kv

1 Answers  

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Why the symbol of register is "zig zag"

0 Answers   Suzlon,

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Its possible to use 3core 2R of 240 sq.mm cable for 3phases & separely 50sq.mm 3core cable fully for Neutral for connection of PCC to MCC 3ph..4wire system?

0 Answers  

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how will we calculate the copper wire load..

0 Answers  

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in three pin plug 6 Amp. 220v AC rating. why earth pin diameter is higher than ohter two pin? what its purpose ?

6 Answers  

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what is surge impedance loading?

1 Answers  

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which motor gives constant speed?

7 Answers  

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what is servomechanism?

1 Answers  

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