Y to use 4 to 20ma instead of 0-10v

5 Answers  

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what is IEC code in cables & how to selecting cables?

0 Answers   ROS,

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How to check the SCAN time of DCS ,n dont give therotical answers .How to check the SCAN time of DCS during FAT?

2 Answers  

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1)unmovable objects have frequency or not?if that object have frequency,how do we measure and transmit? 2)how do u measure the continuity without multimeter? 3)we put 24volt dc supply in railway track how many distance it is traveled without voltage drop?

1 Answers  

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principle of automatic votage regulator

0 Answers   Bhel,

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Capacitance, resistance ( colour coding ), parallel & series circuits.

0 Answers   CCIE,

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What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.

0 Answers  

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explain how magnetic flowmeter works

1 Answers  

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Name some of the common protocol use in automation.

3 Answers   Empower,

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how can we caliberate interface level troll

2 Answers   Grasim, IOCL, KOC, Sankyu,

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what are the different types of Protocols? & their applications.

6 Answers   Infosys, Sitara Chemical Industries, Syntel, VSNL,

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how to calculate static pressure in a pipe line,when we know the DP(differential pressure) in the line, area of the pipe? please any one tell me the relation between them..?

2 Answers  

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