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

1 Answers  

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how to calculate short circuit calculation of the transformer by usuing the percentage impedence? formula needed.

2 Answers   L&T,

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Can We Apply DC POWER To Transformer???? And Why????

4 Answers  

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As per IS why should the control be taken only from R phase, why not from B or Y phase??!!

2 Answers  

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How much load can take a 16 mm aluminum cable 3 phase

0 Answers   L&T, Sanga Energy,

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What is Difference Between Induction Motor & Servo Motor

31 Answers   Jindal, Kirloskar, KTTM, Star Technocrates, Toyota,

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In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.

0 Answers  

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what is the similarity and difference between ups and inverter?

4 Answers   GMR,

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What is the output of 25 kva 11/.4 kv transformer in kw ? Plz generalized it...

3 Answers   NTPC,

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What is dry and wet flashover.

1 Answers  

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explain Density

0 Answers   TCS,

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In transformer how measure the winding temperature ?

5 Answers  

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