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

A 40 kva transformer has a core loss of 400W and a full load copper loss of 800W. What is The proportion of full load at maxmimum efficiency?

1 Answers  

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How 3 phase invertor works?

0 Answers   Aero Ltd,

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what are the alternator cooling system? how it is represented?

1 Answers  

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sir i have applied for isro-09. still i did not got the HALL TICKET.

2 Answers  

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In power transformer tappings are provided on A high voltage side B low voltage side C In middle of both the windings D both high and low voltage side

2 Answers   NNN,

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Explain difference between stand by earth fault and residual earth fault protection?

0 Answers  

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difference between the applicability of nortons and thevenin theorem

0 Answers  

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Which Programming software are use for Allen bradley PLC's?

16 Answers   ADC,

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Whata are the types of Cables?

0 Answers  

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how a circuit breakers work at fault condition .plz give a specified answer.

1 Answers   Regen Powertech,

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If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

0 Answers   Nalco, NTPC,

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As the one point of eac phase winding is connected to each other in satr connction. Even if that at distribution side collesion of two diff phases result in to blast. Why?

1 Answers  

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