when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?

4 Answers  

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What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage

0 Answers   Indeco,

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Period of infinite continuous fourier series a. N b. N+M c.infinite

1 Answers  

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why we cannot apply ohms law to transformer?

3 Answers  

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What are the difference between off-load tap changer and on-load tap changer in transformer?

2 Answers   HCL,

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why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?

0 Answers  

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Construction of ac motor?

1 Answers  

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I decided to provide a 11KV / 440V Xformer in my Substaion. What are the protection required for that?

5 Answers  

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what is the basic difference between fan and home motor if both have single phase induction motor?

4 Answers   Engineers India Limited,

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What should do when induction motor take more load in single phase ?

1 Answers  

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why HT motors are earthed only at equipment side & for it's single core cable with aluminium wire armoure using?

1 Answers   Legrand, NLC Neyveli Lignite Corporation Limited,

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c. int m = 10; main() { int m = 20; {int m = 30;} printf("%d %d",m,::m); 1. 10 10 2. 10 20 3. 20 10 4. 20 30 5. 30 20 6. None

2 Answers  

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