any body please send me the old question papers of ongc test.

0 Answers   NTPC,

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Can a Differential Pressure Transmitter be used as a normal pressure transmitter??

3 Answers  

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defination of plc

14 Answers   ABC, Sofcon,

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In split range control, we will control 2 outputs with time interval. Eg :(with 4-20 ma signal, for 4-12 ma we are operating one control instrument like valve & for 12-20ma we are operating other control instrumet (other valve). If we get a signal of 15ma to first instrument (Valve 1), what will happened to the first valve, and if we get signal above 20 ma to 2 valve what will happened ?

3 Answers  

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who discoverd ohms law?

3 Answers   HPCL,

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which is the best type to measure level of a Tank(water). Displacer or Differential Pressure method?

2 Answers  

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what is consistency transmitter and describe its working?

1 Answers   Emami,

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What should be hight of CONTROL panel for access & OPERATION What is BIS & INDIAN STD for SAME?

3 Answers  

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What is Actuator?

3 Answers   Descon,

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What does it mean 3/2 sov

5 Answers  

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What is the differences of Level swich( LS ) and Level Transmitter(LT)

2 Answers   Hi Spectra, Sipra,

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on which principle control valve works?

3 Answers   Lupin, Reliance,

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