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Instrumentation Interview Questions
Questions Answers Views Company eMail

Explain " FAIL SAFE " feature in temp. measurement.

Bapco Bahrain Petroleum Company,

1 5308

What is meant by cold float of compressor shaft.

Sabic,

1 5140

What is offset in a control system.

Sabic,

2 9010

What is the relationship between GAIN and PROPORTIONAL BAND.

Kharafi National, Sabic,

1 8090

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

SRACO,

2 7511

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

ADMA OPCO,

1 5327

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

ADMA OPCO,

3 31073

What is surge and how is it prevented.

ADMA OPCO,

1 3432

What is the purpose of bypass valve across AS valve.

ADMA OPCO,

2104

State four different types of flow measurement.

ADMA OPCO,

4 9060

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

ADMA OPCO,

1 2983

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

ADMA OPCO,

3 10562

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

ADMA OPCO, Al-Barrak,

5 8954

can any send me a forbes marshall dtron 316 manual

 1957

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.

 2217

Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

How will you calibrate an Absolute Pr.Transmitter of range 400mmHg absolute ?

2039

Derive capacitance to 4-20ma conversion formula / relation in capacitance type pressure sensor?

2239

how to calculate signal cable sizing? and multipair cable sizing??explain in brief?

2351

control panel design guidelines

3396

can u plz send me technical questions asked in SCHNEIDER ELECTRICAL technical paper?

4731

In turbine what does term CDP, NI, NH, HSSOC means.

2589

Explain about the leakage class of the control valves

1993

How to Calibrate Flammable gas detector in field

1213

Why flow/pressure transmitter before control valve?

1569

Regarding , there is an air cooler which control the fans(50% of AV FANS) by temperature in outlet , and the louver of Air cooler is controlled by HIC from control system , So if on Air cooler we will consider 2 individual I/P converter or positioner?

1763

Where are oxygen analysers installed in cfbc boilers? What are their usual readings?

1538

How will you calibrate PID controller? explain with example.

2434

What is the difference between ff transmitter and non ff transmitter

2442

Conversions

2131

POSSITIVE PULSE IS APPLIED TO AN INVERTER INPUT.THE TIME FROM THE LEADING EDGE OF THE INPUT TO THE LEADING EDGE OF THE OUTPUT IS 10 ns. THE TIME FROM THE TRAILING EDGE OF THE INPUT TO THE TRYLING EDGE OF THE OUTPUT IS 8 ns. WHAT ARE THE VALUES OF tPLH and tPHL?

2290

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