Answer / skc

A large capacitor is switching ON and OFF will change the pf with a large factor of variation. but in the case of small capacitors accuracy can be maintained by ON and OFF of many capacitors.

Why we apply 100ADC for contact resistance measurement?.If we apply AC what will happen

4 Answers  

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In the Load Test of 3 Phase Squirrel Cage Induction Motor, 2 wattmeters are used. One of the wattmeter deflects in negative diretion during no load. Why?

1 Answers   CAT,

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How conventional fire alarm system works?

1 Answers  

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How do you calculate of power factor, if it is lagging or leading for unit(1).

4 Answers  

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whats the differece between Exd and Exe

0 Answers   IFFCO, TN,

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what is back trip and re-trip in protection schemes? why these two? define me the exact function of these two?

1 Answers   Siemens,

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For RCD (Residual current device) Icu is defined. How i can find Ics for them?

0 Answers  

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How one can check the faulty capacitor, diode when connected in the circuit ? and when you can not take them out ?

4 Answers  

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how many testing is necessary for 27 MVA transformer?

1 Answers  

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how to identify the direction flow of electrons in a conductor? if i want to check the sequence in kv lines, is any device is available?

3 Answers  

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As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why?

2 Answers  

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Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?

0 Answers   Madina Group,

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