what is control valve input and out put

10 Answers   Nirma,

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Identify the electrical variable that is either directly or inferentially used by various instruments to determine the value of a measured variable.

4 Answers  

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what is preventive maintenance , explain with difination

1 Answers   Bapco Bahrain Petroleum Company,

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what is the conversion factor for nm3 to kg/hr in air flow

4 Answers  

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what diffrence b/w plc s7200,300,400

0 Answers   IFFCO, Reliance,

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pls tell me whethere flame proof HMI's are available or every HMI is manufactured by considering flame proof standard.

3 Answers  

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What is an SCR?

4 Answers   GAIL,

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what is virtual instrumentation

0 Answers  

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pressure switch range 0 to 2bar.i have to install from ground level to 5 meters height.what is the formula the to increse the range ? and every 1 meter how much pressure should be add ?

3 Answers  

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If an Instrument has 550 ohm internal resistance and the cable used for that instrument is 0.5 ohm per meter resistance. If the voltage is 12volt.How much length cable can be used?

2 Answers  

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what is difference between total flow and flow rate in general ?? explain it with daily life example.

3 Answers   GNFC,

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Why boiler chimney area  oxyden sensor fixing? 

0 Answers   NTPC,

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