Answer / istiak

in measuring polarities of a transformer we use a very small
battery or dc supply voltage source.in that case,if we use
alternating current replace of D.C then we couldn't find
polarities because ac changes it's side within a few moment
and dc doesn't..................

Answer / k.prakashchandra

To create momentary magnetic field

explain comutator action in detail.thanks

0 Answers  

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what is allowable ac mixing in dc

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what is the function of choke and starter in a tube light??

2 Answers  

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advantages and disadvantages of inverse definite minimum time RELAY

0 Answers  

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A 6.6 KV motor breaker is try to Drack OUT by me while the motor running. What will Happened? a, will Trip. b,Drack Out lever will not access c, will get shock d, noting will happened

4 Answers  

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Whether IP65 enclosure box blocks ventilation if driver for LED have to enclosed inside IP65 box

0 Answers   Siemens,

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what is electricial and mechnical interlock.

9 Answers   Control Dynamics, EFS, HP,

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11 kv line me tino phase takra jaye to present time me approximately voltage aur current kya hoga...

2 Answers   Electrical, Electrical Tech, Videocon,

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what's the difference between 'shaft power demand' and 'BHP' , when we consider electrical load list.

0 Answers   HEC,

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what is the difference between earth and neutral?

1 Answers  

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how to check the insulation for motor using megger?

2 Answers   GSK,

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Which type of control system is expensive — closed loop or open loop?

1 Answers   GE,

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