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

Instrumentation Interview Questions

Questions Answers Views Company eMail

i have been asked by QAFCO to appear for interview for thy post of Instrument Designer(INTOOLS)..i m engineering graduate with 5 years exp. in design engineering.Will this job profile suit me??i need all ur help n suggestions for thy same?

QAFCO,

2219

What is impulse line size

IFFCO,

3 8261

Absolute pressure is 700psi,what will be the gauge pressure?

IFFCO,

1 6112

IF PLC POWER FAILURE THEN WHAT HAPPEN?

IFFCO,

2 7461

If the on Of the DO module is off in the System cabinet, then what is the Procedure to check weather the Module is working or not.

Honeywell,

2 6441

why use on -off control valve in glove valve

1 4882

Senior engineer's please help me, what is Loop Checking and Loop test? and write difference also? soon urgent

Kentz,

2108

What is Loop Test & What is Loop Checking? Please i need answer for these questions.

2 6538

please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?

HP, Siemens,

2247

what is the working principle of hydra step(electronic level indicator)?

Bengal Energy, Lanco,

2 29502

What is PLC(programmable logic control)?

1 5695

what is purpose of three way manifold valve using for dp transmitter

1 8865

PT RTD Range: -200 to 500 degree celsius If I configured in DCS Lower range and Upper range . In face plate it shows red colour due to overa range how was the characteristics look If the temperature is more than operating range. how was the characteristics look . whether its in Resistance vs Temperature curve is Linear or Non linear

MSL, SRAAC,

1958

tell about various protocols used in different plcs

Emerson, Samtel,

3 9311

i am confusing about differential pressure transmitter as i seen so many DPTs in different ranges how can we calculate level and flow with mmh20 plz tel me

1 3705

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Un-Answered Questions { Instrumentation }

What is three element drum level control system why its better than single element?

2569

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

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

2166

What is the GK Value in Flowmeter?

3703

How do you identify an orifice in the pipeline?

1258

what is exact time to study dcs and plc cources

2048

what is stroke check for field instument transmetter's & AOV's

2199

what is a half wave, full wave, and bridge rectifer.

1782

A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer

2651

How servomotor controls throttle valve of TURBINE?

1955

Do you have reference list?

1833

What is stripper & spilitter ? Diffrence in this.?

3012

Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.

2118

why using negative supply for bentley nevada vibration system ?

2140

I want to buy a seal kit of a pneumatic power cylinder.But I don't know it's specification.So please help me to know its specification.

1941

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