Instrumentation Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Instrumentation Interview Questions

Questions Answers Views Company eMail

Somebody ask me how many size of control valve what is mean of control valve size?

2 5183

what deference between panel earth and systemearth

Tecnimont,

2324

In control valve proximity inductive sensor is taken as digital feedback for full open and full close.Normally its volts 24v when the sensor acts the feed back voltage 14v so that our relay not indicating in plc panel . kindly give the solution.

1957

What is input and output of vaiberation transmitter and what is its unit.

SMH,

4 9305

What is input and output of plc & dcs

2 5913

What is TMR

3 10318

Where are use of pressure,level,flow switches?and what is input and output

3 7428

What is differnece between leveltroll and interface leveltrol?

2 6397

How many types of sensors are used in instrumentation & what are names

CTC,

1 4346

What types of thermocuple are mostly used?

6 10348

(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.

ADMA OPCO,

4037

What is the purpose of LO overhead tank in turbines.

ADMA OPCO,

1 2924

what is the usage of QDV & VOLUME BOOSTER

ADMA OPCO,

2299

what barrier is used in process industry.

ADMA OPCO, Process Industries,

3 7120

what is meant by cold junction compensation. where it is used.

SRACO,

1 6088

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Un-Answered Questions { Instrumentation }

Why do we have earthing cable in branch cable and shield in the same cable?

2603

how to calibrate corollaries (Mass flow meter)?

2166

Is there any relation between Artificial Intelligence and Instrumentation?

1146

Make Heater Process Logic.

2101

In turbine what does term CDP, NI, NH, HSSOC means.

2584

when a magnet is heated?

1976

Specific gravity.

1866

What is the main difference between Cavitation and Flashing?

14338

what is the criteria to decide conductor size of a cable ?

1861

What is motion balance principle?

1172

how to calibrate mass flow meter (Coriolis)? Example calibration range: 0 to 2500 kg/hr line size 3" fluid: Etheline glycol (MEG)

2679

Why all the drains(Gland sealing,ESV,Casing inlet etc) are directly connected to the flash tank instead of hotwell of the condensor in the power plant? My Email Id:naba02222@gmail.com

2285

What is 3 element control system

1487

what is wave length were using ?

1894

What are the types of valves?

1146

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