what is difference b/w Earth and ground

2 Answers   PPL,

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hw to calibration a control valve?

3 Answers  

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GIVE BRIEF DESCRIPTION ABOUT "DCS"

2 Answers  

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HOW TO CHOOSE FREAQUENCY IN FMCW TYPE RADAR INSTRUMENTS. DESIGN BASIS OR DESIGN CALCULATONS ?

0 Answers   Chevron,

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what is loop1 and loop2 in MTS LT?

0 Answers   SPGC,

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My friend has faced this question! I don't know clearly. So please anyone give me the correct and short answer to this question? What is variable frequency drive? Types, what is star to delta? Why this arrangement necessary?

5 Answers   Asian Paints, TCS,

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What is input and output of plc & dcs

2 Answers  

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can any one pl explain me in brief that how we select the leakage classification in valve,means for liquid or gas there is any standard for selecting leakage classification or its depend upon valve size or any any other parameter.

3 Answers  

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Related to control system, What is difference between 4-20 mA active & 4-20 mA pasive signal.

1 Answers  

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I am using Capacitive type level transmitter for measuring oil level in a closed tank (lub oil tank). The txs range is 1500mm, and they do hunt regularly (for about 45mm), can anybody tell what could be the reason??? or any other type level tx that could be used to avoid this?

1 Answers  

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What is the difference between uv and ir scanners? and what is the workig principle of both

0 Answers  

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how we can check level probe and controller

2 Answers  

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