How vfd saving power.

0 Answers  

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What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?

0 Answers  

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Give two basic speed control scheme of dc shunt motor?

0 Answers  

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tan delta test of current transformer.

3 Answers   NTPC,

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Which lamp will fuse first(1)20(2)40(3)200 three lamps will fuse together

2 Answers   NTPC,

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Can RCD's used to protect the VVVF drive if not why.

0 Answers  

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what is synchronous speed.? if an induction motor is made to run at full load, then is this synch. speed too..?

2 Answers  

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Working of microwave oven?

0 Answers   LG,

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why transmission lines traveled in high voltage?

5 Answers   TATA,

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What is the use of iron core in a transformer?

0 Answers  

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when an induction motor runs on load.at that time if we reduce the supply voltage the current increases.But when it runs without load,if we reduce the supply voltage the current also reduced.why?.i checked it practically also.

1 Answers   Birla,

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what is the function of a Master trip relay? why is it used ?

5 Answers   ABB, Nissi Engineering Solution,

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