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Instrumentation Interview Questions
Questions Answers Views Company eMail

Explain " FAIL SAFE " feature in temp. measurement.

Bapco Bahrain Petroleum Company,

1 3514

What is meant by cold float of compressor shaft.

Sabic,

1 3580

What is offset in a control system.

Sabic,

2 6513

What is the relationship between GAIN and PROPORTIONAL BAND.

Kharafi National, Sabic,

1 6309

What is the purpose of valve positioner. Explain 4 uses.

SRACO,

2 5517

What is cavitation. what is the effect of it on control valve and how is it prevented.

ADMA OPCO,

1 3797

What is meant by GAP VOLTAGE, in vibration measurement. Normally how much GAP VOLTAGE is set and state the reason.

ADMA OPCO,

3 23834

What is surge and how is it prevented.

ADMA OPCO,

1 1925

What is the purpose of bypass valve across AS valve.

ADMA OPCO,

1200

State four different types of flow measurement.

ADMA OPCO,

4 6212

Give 2 application of quartz crystal used for process parameter measurement.

ADMA OPCO,

1 1537

What will the new flow factor if D/P Transmitter is RE-RANGED from 25" WC to 50" WC

ADMA OPCO,

3 7665

What is the out put of pressure switch & electronic pressure transmitter.

ADMA OPCO, Al-Barrak,

5 5872

can any send me a forbes marshall dtron 316 manual

962

Dear Friends, we are planning to design Power distribution and Fiber optic in the same cabinet.Like Front side Fiber optic and Rear side Power distribution.Is it any possibility of problem occurs like interference etc? Your answer is highly appreciate.

1207


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Un-Answered Questions { Instrumentation }

how many type conductivity sensor ?

1139


What is 1:1 redundancy ?

1340


State bernoulli’s application.

167


Explain Gas Turbine startup and shutdown sequences

3333


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

1573






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

1436


䑰ҕ䔈ҕ䖠ҕ䘰ҕ䛀ҕ䝐ҕ䟐ҕ䢐ҕ䥐ҕŹ

994


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

1218


1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling

1479


Calibration procedure for water rotameters

1294


What is the purpose of bypass valve across AS valve.

1200


Can anybody please let me know Orifice plate sizing calculation formula and step by step procedure

1036


What is zero elevation and zero suppression?

1132


how to change measuring units from mmwc to cubm/h in rosemount air flow transmitter with hart communicator fluke 744

1343


why we use sensing type(NPN)on a vibration monitring system not a (PNP)sensing type

957