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Instrumentation Interview Questions
Questions Answers Views Company eMail

Explain " FAIL SAFE " feature in temp. measurement.

Bapco Bahrain Petroleum Company,

1 4094

What is meant by cold float of compressor shaft.

Sabic,

1 4111

What is offset in a control system.

Sabic,

2 7454

What is the relationship between GAIN and PROPORTIONAL BAND.

Kharafi National, Sabic,

1 6840

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

SRACO,

2 6069

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

ADMA OPCO,

1 4223

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

ADMA OPCO,

3 26860

What is surge and how is it prevented.

ADMA OPCO,

1 2388

What is the purpose of bypass valve across AS valve.

ADMA OPCO,

1498

State four different types of flow measurement.

ADMA OPCO,

4 7146

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

ADMA OPCO,

1 1971

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

ADMA OPCO,

3 8555

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

ADMA OPCO, Al-Barrak,

5 6889

can any send me a forbes marshall dtron 316 manual

1297

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.

1594


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

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.

2042


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

1452


Which type of diagphram use in costic line,DM water line,natural gas line,oil line?

3303


what is difference between HOT permit and cold permit

1347


What is the calibration procedure of Drum level transmitter if range is 0 to -400 mmh2o in lab?

1515






What is stripper & spilitter ? Diffrence in this.?

2312


applications of plc in printing and packaging?

1505


-/5A. What is the meaning and limitations of this in energy meter constant. It is a 3 phase LT Energy Meter. If this Energy Meter is connected through a CT of ratio 200/5 Amps, then what is the multiplying constant and how its will be calculated.

1772


What is intrinsically safe system?

491


What is feed factor and its Importance in cement industry? How we can solve feed factor?.

2924


If we increase only P what will be controller action ?

1443


in mass flow meter what is drive friquancy ?

1450


Why do we have earthing cable in branch cable and shield in the same cable?

1984


How to Calibrate Vibration Probe (Axial, Redial) in field

433


What is hp & mp seperator .& what is its working principle ?

1633