Answer / pillay

You need a magnetic field to produce electrical energy.This
can be produced from electro magnetic means . What if during
a power failure when the DG set usage is most wanted and the
electrical source from a battery is also not available say
due to battery failure or discharged battery.To avoid such
situation a permanent magnet is used instead for initial
excitation.

Suppose am having the PF value .8, so how can we say that is it lagging or leading?

11 Answers   Bhel,

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what is phase voltage and line voltage? in line voltage how 415v is obtained?

9 Answers  

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HOW CIRCUIT BREAKER RATING CALCULATED?WHAT ARE THE PARAMETERS CONSIDERED?

5 Answers  

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On what principle electric motor works?

0 Answers  

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can anyone help me regarding bout Electrical designs and calculations .. which text book should i follow as i am a trainee engineer.Description of my work which is Electrical designs like cable sizing, lighting, lightning, Gensets sizing, motor sizing, transformer sizing, generator sizing, circuit breakers, PDB MCC PCC SLDB MLDB panels, Single line diagrams mainly, substation desings, cable routing and layouts, reactive power compensations, power factor improvement, voltage drop calculations, power generations, power transmission, power distributions all calculations.Please help me

3 Answers  

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various transmission tower like .,D tower ,K.C.O tower ,C.C.O tower,K.C.R tower ,C.C.R tower ,H.C.O tower in different tons.

0 Answers  

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i am in need of AC SYNCHRONUS MOTOR 30KW. ANY ONE KNOWS THE MANUFACTURER OF SAME. ALSO MOSFET AC CONVERTER 20KVA CONT.OUTPUT.

0 Answers  

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How many electrones need to flow in one second to equivalent to one Ampere.

3 Answers  

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is there any phase difference occurs while primary and secondary side mutual induction occurs?

0 Answers  

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what is the meaning of harmonic in AC waves and when which are prduce and what is the effects on line and give any other information about harmonics

1 Answers  

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The screw thread commonly used for transmission of motion is one of the following types of threads

0 Answers   Caterpillar,

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difference between over current and over load protection?

5 Answers   BARC,

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