Answer / k.prakashchandra

Potential free means 'zero potential' ,not connected to any
power supply

Answer / vels

potential contacts means the contacts are connected with some potential we cannot use our the contacts
whereas potential free contacts means it is not connected with any potential we can connect/use as per our requirement

we have provided 30 mA rccb to water cooler.but we feel shock in cooler body.what is the reason?

3 Answers   FCC,

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Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer

0 Answers  

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what is effect of 5amp fuse on 2mva pry protection of transformer

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Generally in AC we consider voltage, frequency and phase sequence for parallel operation ... Can we parallel two DC battery chargers? If yes, then what precaution to be taken when we parallel two DC power?

5 Answers   Reliance,

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which supply is used in traction system

3 Answers  

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what is purpose of using reactor in substations.

20 Answers   Heavy Engineering Corporation Ltd HECL,

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What is the difference between online ups and offline ups?

44 Answers   Electrical Tech, GMR, Gravity India, HCL, Indus Towers, NIT, Pyramid, Techno Electric and Engineering, UBS,

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Connection diagram for KW meter and  Kva meter

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25 kva 3 phase dg how many current will take per phase , plssssssss reply me

3 Answers   Bharti,

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2. The heaviest and lightest strings on a certain violin have linear densities of 3.0 and 0.29 g/m. What is the ratio of the diameter of the heaviest string to that of the lightest string, assuming that the strings are of the same material?

1 Answers  

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how do you tell if a avalanche button diode is a p or an

1 Answers  

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how can we detect that which is receiving side and which is sendind end of a trnasmmison line by just seiing it?i.e its which end is coming from genertaing and distribution side?

5 Answers  

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