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

Instrumentation Interview Questions

Questions Answers Views Company eMail

What is difference between magnetic flow transmitter & Electromagnetic flow transmitter?

1 4923

please explain clearly in PID controller if We increase P only what will be action of the contrlere.

IMECO,

1 5628

If we increase PI controller what will be action.

IMECO,

1 4648

yokogawa Temperature transmitter showing Error 15 which is Reverse Cal Fail (confirmation calculation result is bad) in manual they mentioned reasion That the output goes to the value set by hardware failure mode jumper. How can solve this problem ? anybody can say solution

GTL,

1 7000

Why drum level range is given -500 to 0 mmwc pls give me that answer

1 7501

What is the minmum distance between the electrical panel and Instrument panel

Dodsal,

1 3432

what is electric motorised valve working principle.

1 13177

what is difference btween rotameter and orifice plate?

3 9754

How many problems can be occurring in solenoid valve? And how it can be rectified?

Adgas,

1 5650

Why we use the double acting control valve in flow line?

3 8030

how to calibrate temprature switch and flow switch ?

Adgas,

1 7250

full process of gas turbin?

2105

Furnace draft transmitter range is -50 to +50 mmwc. why the impulse line connected in hp side?

Arena,

2 13723

what is zero trim and span trim?. at which problem we need to use this?

3 8977

Good Evening all.My question is - For a feed water line to an equipment if i need to measure the flow we will use orifice /magnetic/vortex depend on cost/spec.If i need to measure a ''Alarm''signal and ''Interlock'' from one point i think we can use orifice type in one location with 2 different tapping points - one for alarm and one for an interlock to flow valve..If in case i need to have both these signals(Alarm & interlock) from magnetic flow meter,is it possible??will 2 seperate sensors will be located inbuilt r we can program it ??..i thk we can have one transmitter with these 2 signals...need to know any technical issues are there?pls clarify

3 5374

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Un-Answered Questions { Instrumentation }

How we can check the 2 wire proxy switch? & how it is connected to DI MODULE OF PLC?

2603

Explain why use mmwc unit?

1044

Is there any relation between Artificial Intelligence and Instrumentation?

1150

Draw a P& ID showing – orifice flange, plate, dp transmitter, isolation & bypass valves and tubing.

1930

What is zero elevation and zero suppression?

2168

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

1691

is there any digitel grevity meter availaible in the market by which we can measure specific gravity of a battery?

2218

What materials are used in thermo wells?

1168

Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72

2211

How oil line flow measured?eplain about instruments used and working principle?

2059

while am calibrating Drager polytron 2IR flame gas detector occured non zero status.how can i get zero status?

2209

How to calculate mmwc values into tonnes?

1258

what is piezoelectric transducer?give an example in power plant n state its principle?

2595

What is the use of GMV in turbine?

4434

How to fix back the valve actuator stem

2058

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