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Just find out firmware manual of VFD for programming

What is the meaning of Fault level rating?

1 Answers   Balrampur Chini Mill,

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bsnl tta exam question

0 Answers  

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how can 3phase motor speed can be controlled without vvf drive?

1 Answers  

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what is hourly consumption of coal in therma plant

2 Answers   NPCIL,

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Explain What will happen when direction of field current is changed (i.e, field excitation is reversed) in the following machines? 1) Alternator 2) Synchronous Motor 3) D.C Generator ( Shunt or Seies ) 4) D.C Motor ( Shunt or Seies )

3 Answers   NTPC, Transco,

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What are the typical values of characteristic impedences of overhead line and underground cabel? Why there is so much variation?

1 Answers  

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Explain what are inter-poles and why they are required in a dc machine.

0 Answers  

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Explain why machinery used on a.c supply is usually rated in KVA instead of KW?

10 Answers   EEE, Mtandt,

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What is the Polarisation index value ? (pi value)and simple definition of polarisation index ?

15 Answers   Essar,

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How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?

0 Answers  

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OUR METER READER TAKE READING OF INDUSTRIAL CONSUMER.THEY ALWAYS ASK HOW TO INCREASE POWER FACTOR FROM 60% TO 99 % TO AVOID PENALTY OF POWER FACTOR.

3 Answers  

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What are the complete specifications of a motor?.

2 Answers   RRB,

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