Answer / amrish

VFD Means Variable Frequency Device,,, so as same as name we can control the speed of motor with the help of VFD by controlling V/Hz parameter.

Why the Voltage rises when Leading Power Factor is occurs?

2 Answers  

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Which is remain unchanged in transformer action?

6 Answers   NTPC,

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At what load maximum effiecency will be obtained Distribution transformer and Genarating transformer Pls clarify?

4 Answers  

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what is the difference in operation of 3 phase motor when am forward delta connection and reverse delta connection?

1 Answers   Birla,

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What is rotating magnetic field?Discuss elaborately.

0 Answers  

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What type of DC Generator is used for Arc Welding purposes?

7 Answers   CPCL, Rubicon,

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1500Ah VRLA battery,if its weight is designed 125kg during maufacturing its weight is reduced to 85kgs,What will be impact on AH capacity,life & economy?

0 Answers   Bajaj,

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Why not instal the NGR in 11kv/433kv trasformer?

3 Answers  

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1.What is effect of capitance in transmission line? 2. After raising the voltage at receiving end what will be happen? 3.how we nullify or control the raised voltage at receiving end?

3 Answers   NTPC,

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In Star type and Delta type Motors, If one phase will miss/Break then which phase winding will burn and why?

4 Answers  

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transformers? power factor? machiences?

3 Answers  

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Why are the voltage levels in a powersystem are 11KV,33KV etc., why not 10KV,30KV?

2 Answers  

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