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

Instrumentation Interview Questions

Questions Answers Views Company eMail

What are the charcterstics of a P&ID controller block for Governor speed raise or lower for a load sharing functionality between 4 Gas turbines in droop mode.

TNPL,

3014

what are the steps to commissioning a DCS system?

BGR Energy,

2 16727

what is orifice plate? Give me best answer?....plz

5 11377

Can we use twisted pair cable instead of ethernet for communication?

Yokogawa,

1 8049

How does a redundant controller comes in line when the main controller fails??

Yokogawa,

3 9590

DCS marshilling Cabinet Power supply can be replace during plant running time?

1 5031

Why do we use 24V DC supply in instrumentation? What are its merits and demerits??

JSW, MJPRU,

1 9676

CAN WE CALIBRATE LEVEL TRANSMITTER USING HART COMMUNICATOR WHEN WATER LEVEL IS PRESENT IN THE BOILER SHELL?

Chemin, Emerson,

4 10927

pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.

Siemens,

3123

what is compensation in engineering and what is temperature compensation?

Binani, Yokogawa,

1 5640

1.what is controller proportional gain 2.what is the controller intergral action time. 3.A proportional plus derivative controller that has a proportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input if the input rises and falls at the rate of 4 units per minute.

2684

I have a Control VAlve having size of 2 ".Only the known parameter is Pressure drop . Its 2 Kg. Then How to calculate control valve sizing means Cv.

JSW,

2351

what is the Difference Between Domain and Station?

Emerson,

3 10863

how to calculate density?

2 6055

How to check vortex flow meter is in good condition while we do not having calibration setup?

4 8969

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Un-Answered Questions { Instrumentation }

what is the responsibility of an instrument commissioning supervisor

3155

What care will you take in the installation of control valves,SCADA,DCS and FOC in Oil and Gas Project?

2124

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.

2020

How to measure the dust in chimney(spm)?

4093

how pressure transmitter work, what is its principal to measure and how its generate signal. for pressure transmitterinstallation which precautions must be taken ??

1746

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

2014

we have level transmitter for h2s04 storage tank capacity 10k ,always there are failure of transmitter due to failure of magnetic floats ,please come up with solutions at the earliest.

2059

What are the uses of orifice plates?

1082

give me all the details about the interview and which type of question being asked

2221

what about your moleg in pogrees with company

2272

how pressurize drum calibrated ?

2046

what is effect of specific gravity in differential level transmitter , explain formula related with this .

1647

what is function of SCADA , and how is it work, explain with difination

2366

our kks tagging is crossing more than 12 character please suggest how to take tags in the DCS

2071

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

2161

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