Answer / faiyaz

Please sent me EMAL WRITTEN TEST QUESTION AND ANWER

how we use the positioner feed back in split range control valves?

1 Answers   Tata Power,

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what is piezo electric transducer?its principle?

2 Answers  

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p=hdg,please explain these parameters?

7 Answers  

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what is rtd

4 Answers   Petrofac,

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IF PLC POWER FAILURE THEN WHAT HAPPEN?

2 Answers   IFFCO,

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Square root calculation for dp flow transmitter?

0 Answers  

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what is the meaning of potential free contact. difference between dry and wet contact?

6 Answers   GAIL,

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what is difference between venturi and orifice

1 Answers  

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what u mean by speed control in turbin? how it was working?

2 Answers  

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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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please explain about actuator action? direct action & return action ?

1 Answers  

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which type of signal used in instrument?

3 Answers   Emco, Makson, Sail, TATA,

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