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

Instrumentation Interview Questions

Questions Answers Views Company eMail

if we mount flow tube in arrow direction then flow comes in negative & if we mount it another direction then flow comes positive,So what will be the problem

2 4752

if tx. dp increase or decrese what happend in the reading

BSP,

1 5036

how can calibrate vacume trasmitter by HART COMMUNICATOR ?

Bajaj, IMECO,

3 7306

What's the difference between cold loop test and hot loop test?

5 43317

Can we calibrate an actuator?

Siemens,

5 12383

What is Cu-100 and Cu-1000 ? and tell me its application ?

2 6686

why we cant transmit the dc current easily

1 5075

What is the Temperature Co-officient of Resistance of PT- 1000 and PT-2000 ?

Adani, Birla, MEIL,

2 9210

Consider a control valve action,the inlet air pressure is only 6 ksc but physically how it can be operate against 100 ksc line fluid pressure?

SCS,

2 7028

ABB DCS (AC 800 M)redundency take howmany milliseconds to switch from master controller to slave?should be less than DCS scanning time?

SCS,

2 6150

A DP Endress and Hauser flow transmitter is always tripping pump at low flow. set point is 74 cubic meter/hr. Thorough impulse line flushing and zero calibration has been done, yet problem persists. What do you think is the problem and how do you rectify this fault?

5 7897

how works encoder in plc

2019

Explain the usage of the PLC system?

3 6522

Explain the difference between the types of input variables plc?

1 4736

Is an analogue only transmitter as accurate as a smart transmitter?

SCA,

2 5006

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Un-Answered Questions { Instrumentation }

how to check earthing,what is minum ohms for proper earthing

1890

what is easiest way to read STL language in PLC?

3089

how the arrangement of equipments done in control room

1961

I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.

1939

what is the procedure of O2 sensor(ABB) calibration?

2137

what is exact time to study dcs and plc cources

1993

we want to control pump in let pressure and tank (for exp) our inlet line if water cam and pump will on and when our tank will full pump will off also if our inlet pressure low pump will off even tank not full.this pump i want to uses on our water supply line.

1660

detail of mass flow meter pricipal

2271

What is the reason PT speed not incresed in gas turbine?

2355

please send me some question papers of HPCL aptitude test ?? please send it to bipinb.28@gmail.com ...

1934

How can i test procedure grounding for CAT-7 cable? Or How can we test procedure CAT-7 Cable Electrically safe?

2905

What is the start up procedure of desalter

3620

Why use ball valves on Gas pipelines instead of gate & or globe valves...means basic diffrence or use of these valves..how designers knows this type of valve with rating is required...

2296

Draw a simple circuit for a well head control panel used to protect the well against fire, leak, blockage, ESD, & controls the operation of one downhole & one surface safety valve. Explain the operation and controls

1580

send me last 5 years questions asked in rrb chennai, for section engineer

2050

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