Instrumentation Interview Questions
Questions Answers Views Company eMail

How do you measure g's?

HPCL, Thermax, GNFC, Polmon, Aramco,

5 13065

What is the meaning of the term "g force"?

Thermax, Saint Gobain, Reliance,

3 9612

What is the relationship between the universal gravitational constant (G) and the acceleration due to gravity (g)?

APPSC,

3 32411

Identify the electrical variable that is either directly or inferentially used by various instruments to determine the value of a measured variable.

4 6069

Describe how to calibrate various types of instruments and transmitters using ISA industrial consensus standard techniques.

Reliance,

4 10841

Identify and use the ANSI/ISA-S5.1 consensus industrial standard process symbols.

GAIL, Olympia,

2488

Troubleshoot to the device level basic process control systems given the Process and Instrumentation Diagram?

HPCL, Chettinad,

2 7474

Convert a pressure, level, flow, or temperature process variable value into the appropriate pneumatic or electrical value given different types of instruments.

Jindal, MCL, Thermax,

6 15505

Determine the manipulated variable, controlled variable, and the measured variable given a description of various typical industrial processes.

Honeywell,

6 34787

How to set up the various advanced process controllers, input the proper parameters, and tune those controllers given related control system information.

EID Parry,

1 3801

How the warning lamp of a charging-system is activated ?

1625

Technician A says the brake warning light is connected into both the parking and service brake systems. Technician B says the brake warning light will come ON only if the service brake system fails. Who is correct?

2 3841

If a warning lamp will operate with the ground circuit is bypassed with a jumper wire to ground, what should you check?

1110

Technician A says that a fuel tank sending unit will have a high resistance only when the tank is full. Technician B says that its resistance when the tank is full depends on whether the sending unit is designed for use with a bimetallic gauge or with a magnetic gauge. Who is correct?

3 5606

what will the sending unit in the fuel gauge utilizes?

919


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Un-Answered Questions { Instrumentation }

If a control valve is hunting means means if we are giving 50% to the cv, the cv will open at 51% then slowly slwoly it will reaches 49% , so what to do for solve this problem. The cv is double acting and mounted for anti surge operation, it having 4 nos. volume booster, one sov, one positioner, etc..?

1044


how many type of plug are used in pneumatic control valve,name them.

3202


centrifugal compressor interlock? Tell me the parameter at which compressor will trip

1832


Why thermo wells are used? What materials are used in thermo wells?

109


With N nodes and B branches what will have a network ???

1000






a flow transmitter [range-0-400mbar] connected in process line. please explain me how to calibrate the flow transmitter , & how to do static error

1324


Senior engineer's please help me, what is Loop Checking and Loop test? and write difference also? soon urgent

1072


key exchanges in wpa,wpa2,tls

918


What types of Instrumentation Related Questions can an Interviewer ask in a Telephonic Interview ?

1515


What are the types of control valves available

969


What is the difference between working pressure and calibration pressure of a control valve

2033


Explain about the leakage class of the control valves

1082


How to check vortex flow meter is in good condition while we do not having calibration setup?

5818


How will you calibrate an Absolute Pr.Transmitter of range 400mmHg absolute ?

1066


What is Cavitation in a control valve?

1033