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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 19385

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

Emcure,

2196

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

1 4282

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 11206

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

3 7100

on which principle control valve works?

Lupin, Reliance,

3 11624

what is differences between singal acting and double action valve

Carlo Gavazzi, Welspun,

1 7440

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

10 12766

why is not useing in boiler skin thermocople

KNPC,

1 5278

how to explain PID?

Jindal,

2 6336

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

2343

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

1 4474

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

2118

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

Emirates,

2 24518

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

Wartsila,

8665


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

What is zero elevation and zero suppression?

2165


Sir, I want junior executive, Instrumentation question papaer for IOCL, Plz send to arabinda.ghosh83@gmail.com

2301


Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?

2170


How many interlocks at turbine? Plz explain briefly

1954


send me last 5 years questions asked in rrb chennai, for section engineer

2101


Gas equation

1850


What materials are used in thermo wells?

1167


How to fix back the valve actuator stem

2051


control panel design guidelines

3393


where uses EXe /EXd/Exo/Exn/Exp/Exq/EXia

9924


What is modbus?

1201


What is the GK Value in Flowmeter?

3700


I have energy meter for educational project having 0.5s class but my friend need 0.2s class meter , which one is good for that purpose and what is the actual difference of that two classes , need very easy example also.??

1404


In Safe Guarding test what means by "Failed to Danger" ?

2156


How it the difference between force balance system and dispalacement balance system?

2096