What does VVVF stands for in VVVF drive ? How does it differ from VVF drive?

8 Answers   HAL,

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Why generating voltage is limited up to 22kV?

4 Answers  

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What is turn ratio of a transformer?

0 Answers  

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how is find out kwh step by step

0 Answers   Voith,

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the transient state stability limit of a system wherin power is transmitted throgh a double transmission line is (a)equal to steady state stability limit (b)more than its steady state stability limit (c)less than than its steady state stability limit (d)equal to its dynamic stability limit

1 Answers  

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purpose of check value

1 Answers   Seagate,

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What is polarisation index value?.(pi value) Simple & brief definition of polarisation index?..

7 Answers  

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How many types of Transformer testing..

1 Answers  

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How to calculate wire length,size & current? ( related to control panel)

0 Answers   FSS, GK Controls, Panel Tech,

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Sir I want questions for rrb sec technician gr III (electrical)

1 Answers   RRB,

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In all the generators, the excitation supply is DC. What is the significance of DC excitation? What will happen if AC supply is given as excitation supply?

2 Answers  

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can u give me a brief idea about power line carrier communication ??

0 Answers  

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