Answer / ashraf nasr

mcb ' miniture circuit breaker' installed at the final
distribution circuits - as close as can be to loads - in
order to protect loads

mccb ' molded case cicruit breaker' used as a main breaker
for branches . it has higher rupture capacity

acb 'air circuit breaker' used as a main breaker for the
whole network - on the head of the transformer- since it
provide releabilty for its slow opertaion

vcb ' vaccum circuit breaker' it only differs due to the
damping meduie and its used in distributors

why odd hormonics only will effect the power system.why not even hormonics

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3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?

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What is the function of capacitor in electrical circuits?

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What is resolver and glass scale in CNC how they work?

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In a synchronous motor armature current flows due to revolving flux which in turn rotates the load,but in no load condition armature current is zero hence thr is no revolving flux then how motor rotates?

9 Answers  

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What is the reason behind 11kv 33kv 132kv.....means multiple of 11?

6 Answers  

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Why in 6 KV XLPE cable termination kit used and why not in 380 V xlpe cable same is not used

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What is a transductor ?

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Can the Neutral and Body Earthpits of a transformer conncted together by Earth strips under ground.

4 Answers   SanDisk,

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what are carbondioxide and dcp used in fire extinguishers

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A 400KVA transformer has 400 Hz frequency. If the frequency is changed to 50 Hz, then what will be the new KVA rating?

0 Answers   Spectrum,

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Due to ferranti effect which power increases at the receiving end?active power or reactive power?

5 Answers  

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