Answer / roson

area of contact will be more while placing in vertical
compared to horizontal.soft coke is used to improve earthing

Answer / samsung

which earthing plate ur talking abt???
there is earthing rod/bar in the panel to which we attached
a strip for earthing and we connect that to main earthing

soft cock, water(salty) will reduce the resistance and it
is in the pit in which earthing rod is vertical, it drains
current /or it injects current depending up on fault
position and pit postion

Answer / dawa

It will cover more earth surface and as go deeper by deeper soil resistance is also low compared to surface.

Application wise, where we should use AC motors and where we should DC motors?

1 Answers   Nespak,

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Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer

0 Answers  

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Why we cant store an ac power. If we coo store in which device we can?

0 Answers   Jindal,

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

0 Answers  

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Whta is WT in a transformer, specify its function.

4 Answers  

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If there are two transformer having rating of 2.5mva, 6.6kv/440v(satr-star),and the load is 600kw then what is better to maintain less losses in transformer having both transformer in parellel or only single transformer connected to load? Please give calculated answer

0 Answers   UltraTech,

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how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???

0 Answers  

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I Have 3 Phase 10 KW AC Alternator i found one phase weak, so what will be the reason & what action shouls i take to rectify the same.

0 Answers   Vadilal,

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what is the working principale of air circuit breaker ?

5 Answers  

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why 400Hz is used for aircraft systems ?

14 Answers   Cabin Crew, Jet Airways,

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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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what mean by analog ,digital,numerical meters and relays? say the example?

0 Answers   ABB,

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