Instrumentation Interview Questions
Questions Answers Views Company eMail

what is the name of thermocople element cable from field to pannel end?

3 4388

when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

546

when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

2 9231

what is the difference between cold loop and hot loop

2 8307

why we use 24v dc in instrument rahter than 230vac????

4 13644

why we use 0.2 to 1.0 kg/cm2 output in control valve

GNFC,

4 7130

in which application we use bigger size actuator

5 3997

diffrence b/w accuracy and precision?

HPCL,

4 4437

can we connect instrument earth pit to electrical earth pit, if not why?

2 11952

If we interchange HP and LP tapping in drum level measurement and reverse LRV & URV correspondingly.What is the difference between the normal tapping(HP,LP) and reversed tapping(LP,HP)?

2 9230

What is Droop? What is Step/Gradient Limiter in Turbine Governor control?

1220

what is control valve input and out put

Nirma,

9 10849

what is thermocouple output

IPCL,

7 5546

What is principle of ultrasonic level transmitter?

3 6380

what is formula for calculating flow if i have pressure and pipe diameter?

1006


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Un-Answered Questions { Instrumentation }

in sulfur process what is material of impulse line we use to connect with transmitter ? and does teflon affected by sulfur?

814


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

69468


what is all types of analyzer in water production plant?

777


what is function of SCADA , and how is it work, explain with difination

656


what is the principal of operatio of dc motor

110


sir,would you please send me the Hindustan petroleum corporation limited papers(HPCL).my e-mail ID is ujjwal_sharma1983@yahoo.com

778


what are the diff. in servo and regulatory control?

619


principle of automatic votage regulator

593


how do i tune dearator pr control valve using PID. we set the set point is 0.6kg/cm2 now i want 0.5 to 0.7kg/cm2 limits so what should i give p,i,d values. then pls explain how do set pid values for control valve tuning?

428


If we increase D what will be the controller action?

2268


What is zone,loop/fire alarm system?

863


how to convert MA in to measuring values..and how mwasuring values into MA ?..plz ansr.i have intervw

895


we want to control pump in let pressure and tank (for exp) our inlet line if water cam and pump will on and when our tank will full pump will off also if our inlet pressure low pump will off even tank not full.this pump i want to uses on our water supply line.

295


what is use of communication wire in multipare cable(oil and gas field), why this communication wire not used in single pair cable?

671


what is the current pay package for an instrumentation engineer having 2 years of experience in cryogenic technology???????

2722