In alternator generally we give DC voltage to field of alternator but field (excitor)produce Ac & converts into DC by rotating rectifier(RR ) then fed to rotor .my question is why we cannot give dc voltage directly to rotor instead of Excitor & RR ?

1 Answers  

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what is 6 pulse and 12 pulse inverter? Explain brifly

2 Answers  

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whydoes the p.f of diesel generator always be 0.8 explain how will you determine the shortcircuit capacity of network

1 Answers   Dalkia,

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What is the technical difference between On delay timer and a Star delta timer?

0 Answers   Roche,

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what is power factor for any engineering equipment?? what should be its value?

3 Answers   ETA,

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differentiate PLC,DCS,SCADA?

1 Answers   SAS,

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60 watt bulb and 1500watt iron which device has more resistance & why

5 Answers   RMSI,

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What is phase in electrical engineering?

5 Answers  

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how much watts the computer will takes

2 Answers  

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What is tranformer differtial?

0 Answers  

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how calculated Transformer losses.

0 Answers  

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What is mean by discrimination of circuit breaker ?

1 Answers  

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