Answer / ajayk

sound is a sort of pressure
waves of amplitude n
frequency and a non electrical
quantity.so by using fibre
optic interferrometric method
and a cro u can do so( phase
difference).one can also use
piezoelectric transducer.

if we increase the frequency given to a transformer then wat will happen to the transformer size, whether it will increase?

4 Answers  

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What is Electricity?

2 Answers  

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What is converter transformer? Diff b/w converter transformer and distribution transformer? why we use converter transformer in place of giving supply to drives?

1 Answers  

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CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?

22 Answers   L&T,

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CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

0 Answers  

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how to get bearing & winding temperature of an induction motor?

0 Answers  

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it is difficult to interrupt a capacitive current because (a)it has a leading power factor (b)current magnitude is very small (c)the restriking voltage can be high (d)stored energy in the capacitor is high

2 Answers   DGVCL Dakshin Gujarat Vij Company, MGVCL, UGVCL Uttar Gujarat Vij Company Ltd,

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what is the rating of Insulation tester for measure 15 KW, 3 phase 415V 50 HZ induction motor?

2 Answers   ABB,

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what is the difference between self excited & seperately excited ?

3 Answers  

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how to calculate the capacitor to maintain power factor?

0 Answers   Bosch,

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200-100/1-1A – Transformer Knee point voltage

1 Answers   AAPT,

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ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit

4 Answers  

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