Why we are using 4-20 mA as Analog signal transmission other than 3 to 19 or 2 to 18 or 6 to 22 like wise ? What is the reason behind using 4 & 20 mA? Can anyone give proper technical reply ?
5 12126Post New Air Liquide Instrumentation Interview Questions
What is admin panel in website?
How can you estimate a gas flow based on two pressure measurements?
Which compiler is used in java?
Explain the terms solid solution, eutectic, eutectoid and peritectic.
What is the rgb stream?
Is json a nosql?
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
Explain abouT Security Life Cycle.
What is the purpose of #!/usr/bin/pythonon the first line in the above code? Is there any advantage?
Explain encoder definition?
What are the applications of tunnel diodes?
What happen when neutral point connected to core balance current transformer? (Neutral point of an alternator of a 180KVA DG. Neutral point connected to CBCT means enter to the CBCT)
What is dbrm? What it contains? When it will be created?
What are sparse columns?
What is an immutable object? How can it help in writing a concurrent application?