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

Instrumentation Interview Questions

Questions Answers Views Company eMail

What is the working principle of oxygen analyzers(zirconium oxide type) used in CFBC boilers?

Bajaj, Kohinoor, Wartsila,

3 19404

Why upper weighing limit of electronics balance is 90% of the total weighing capacity?

Emcure,

2198

Why humidity limit is 30 to 55 % for raw material storage?

1 4291

Why the Air Tank Accumulators required for the single acting actuators SDV's or BDV's as I see in some Schematic diagrams of ROTORK ??

L&T, Siemens,

2 11226

if we put any thermocouple on a table in a room without any connection,what temperature should it show.

3 7116

on which principle control valve works?

Lupin, Reliance,

3 11648

what is differences between singal acting and double action valve

Carlo Gavazzi, Welspun,

1 7457

why do 4 mA serves as 0% not 0 mA?

10 12814

why is not useing in boiler skin thermocople

KNPC,

1 5283

how to explain PID?

Jindal,

2 6350

How to do gas analysers calibration in AUTO and Manually by using zero and span gas?

2347

In which principle Woodward Governor 505 work in power plant? What are the input of Woodward governor 505

1 4483

what are the definitions of input, output, command & signal according to instruments controlled by PLC using DCS System?

2128

how is a displacer type level transmitter calibrated.explain the method?

Emirates,

2 24546

please tell me what is a light up procedure of Cfbc boiler and what it's axuillaries of cfbc boiler?

Wartsila,

8672

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Un-Answered Questions { Instrumentation }

can anyone tell me about the basic concepts to consider before to start a PLC panel wiring

1948

Somebody tell me in what way i need to prepare for csio pgrpe(adv instrum eng)interview?what all the quest can i expect?

2590

What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)

2113

Q- What are the application in which PNP transistor is preferred over NPN ?

3348

Name different types of bourdon tubes.

1148

Hi, Is there any smart plant instrumentation design training institute in Bangalore?

1676

What is the use of temperature compensation?

2016

how to check earthing,what is minum ohms for proper earthing

1955

control panel design guidelines

3403

Please send me the sample question of Instrumentation of hpcl/iocl exam. my mail id hihi_kiholo@rediffmail.com

3218

what is the procedure of O2 sensor(ABB) calibration?

2193

full process of gas turbin?

2106

what are procedure of sox-nox calibration

2977

Explain plc level and its type?

1353

What is first echo & echo window in radar type level transmitter?

1697

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