Answer / faiyaz

Please sent me EMAL WRITTEN TEST QUESTION AND ANWER

why 4ma show higher zero ? i have transmiter flow renge 0-1000 m3/h but 4 ma show in monitoring 200 m3/h and 20 ma show 1000 m3/h i want when 4ma show 0 m3/h and 20ma 1000m3/h

3 Answers  

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What is the difference between PLC and DCS?

4 Answers   Honeywell,

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Can a pneumatic control valve work without positioner?

4 Answers   SMC,

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HI FRIENDS IHAVE QUESTION 1.WHAT IS PARTIALSTROKE TEST?WHY IT IS USED ON ESD ON OFF VALVES?

3 Answers   KNPC, Rotork,

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what does it mean an active front end in vfd plz explain it briefly

0 Answers  

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generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

1 Answers   Indian Steel,

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what is positive feedback and negative feedback?

2 Answers   CEPC,

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What is the difference between a Extension cable and a copnesating cable.Where can we use compensating cable. Is anywhere compensating cable are used for mv transmission to the indicator.

1 Answers  

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without a positionar can a control valve operate? give the difference of operating with positionar and without positionar?

5 Answers   IOCL,

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kindly tell where orifice,nozzle,air foil,ventury used in flow measurement?

1 Answers  

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What is the difference between DCS and SCADA?

1 Answers  

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How will you test a transistor with a multimeter?

0 Answers  

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