Answer / guest

variable frequency drive

Answer / ramraj beda

variable frequency drive.This drive is used to control the speed of induction motor by controlling its frequency.This is used in fans, pumps, blowers etc.

if a single phase 3 hp submersible pump of Crompton Greaves is moving in reverse direction and sometimes it moves in rigth direction ,then what may be the cause....

2 Answers   Crompton Greaves,

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how can we connect a distance relay to CT core that is for backup protection or metering?

1 Answers  

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why our power production in multiple of 11, in strictlly asking why our o/p voltage of alternators is 11kv only and whynot graterthan 15 and016KV?

4 Answers  

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why power factor laggs and leads in case of inductance and capacitance??

1 Answers  

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Difference between divercity and power factor

1 Answers  

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WHAT IS THE DIFFERANCE BETWEEN IP54 AND IP55

2 Answers  

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EXPLAIN THE TRANSFORMER MAINTENANCE?

0 Answers   Enercon, ERT, GEL,

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What is the meaning of dedicated earthing?

0 Answers   Dabur,

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what is difference between earhing and neutral

2 Answers  

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identify the components of the tube light and explain how they function???wat is inside the fluroscent tube???how it works???

7 Answers   NTPC, TPL,

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How to calculate flow of water delivered by pump when pressure & size of pipe line is given

0 Answers   Knight Frank,

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what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter?

0 Answers  

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