Answer / mn krishnamurthy

usage of lot of frequency drives and votage regulatiors with IGBT and SCR for heavy loads with start and stop and linear varying voltage for speed control created Harmonic currents

how to calculate energy of 3-phase motor?

0 Answers   Suzlon,

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what is interference

1 Answers   L&T,

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what does the word synchronous mean in 'synchronous machine'

3 Answers  

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What is TVSS Protection???

2 Answers   Emerson,

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Draw a circuit diagram in which if button is open we can use socket and bulb as a series test circit and if button is close than simple we can use socket as any load purpose.

0 Answers  

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what is the difference between on line & off line UPS

3 Answers  

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A resistor,inductor and capacitor are connected in series respectively.Voltage across resistor is 40v,across inductor is 70v,across capacitor is 100v.Then what is the total voltage applied across the elements?

5 Answers  

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can some one clearly explain why -48 volt DC use in telecom site????

0 Answers  

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write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;

0 Answers  

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What are the types of excitation system?

0 Answers  

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can we check the resistance of earthing electrode while it is connected with the neutral of UPS system

3 Answers  

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How the field flux is controlled in DC drive ?

4 Answers   TATA,

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