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

Instrumentation Interview Questions

Questions Answers Views Company eMail

whats the problem will arrise if we rotate the hosing screw of the differential pressure transmitter?

1 3641

how to rectify the problem ,if we erected the DPT instrument wrongly of hp on lp side and lp on hp side?

5 9528

in natural gas indirect water bath heater,how to prevent the problem of backfire from firetube during ignition...becoz of this backfire performance of wbh is going low.

2805

1)How many tpes of vibration probe and how many tpyes of vibration. 2)how we can calibrate a vibration probe with tk3 3)what is RMS value in vibration measuring application and how we calculate it.

2420

In VVVF DRIVES VOLTAGE IS ALSO VARY WITH THE FREQUENCY. HOW? WHAT IS THE DIRECT FORMULA RELATING THESE TWO.

India Cements,

2359

Q- Why Phase tester is only used for checking AC not DC ?

1 13962

Q- In the process of checking AC through Phase Tester our body is the part of circuit but we don't recevie Shock, Why ?

2 5580

Q- What are the application in which PNP transistor is preferred over NPN ?

3343

Q- Ordinary Water Tap is which kind of controller ? P , PI or PID i chose the option of ON - OFF type controller but ambiguity is that for different positioning of tap we get different flow

1 3425

Q- Which of the following is Close loop system - a-)respiratory System b-)traffic light system c-)washing machine d-)Room heater my option is A, what is our take on option B & C

Sail,

4 7387

Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem

Sail,

2127

Q- voltage source of 12v is driving the circuit.if circut draw the current of 0.5A them source voltage will became 11.8v.what is the power dilevered by source when circuit draw 5A current ?

Ecil,

4 6980

Why Current(Ampere) is chosen as Fundamental Quanties not Charge(coulomb) ?

3 8350

What is the difference between dry contact and wet contact?

2 15976

What is meant by Fail Safe Condition in PLC?

4 16054

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Un-Answered Questions { Instrumentation }

Why humidity limit is 30 to 55 % for raw material storage?

4282

Can anyone convert a 5/2 way or 3/2 way valve into an ISO valve?

929

Specify eight technical requirements that you would consider important, when deciding upon a particular control valve?

1887

sir i m preparing for BARC but i am not getting any papers to prepare for this exam so please send me some sample papers to my i.d for the preparation of barc.

2462

Do you have reference list?

1833

How many ohms are required for proper earthing?

1092

Hi i m B.E. In elect. & comm. I m workin in bio mass plant from 6 mnths as inst. Engg. but now i m in dept. Of operation as shift engg...which is best operation or inst. 4 me? M confusd..plz help and reply me..

4246

How is flow measured in square root?

1290

What is the use of gauge?

1137

what is metal of piston ring

1931

what is loop1 and loop2 in MTS LT?

4656

what diffrence b/w plc s7200,300,400

2070

components of control circuit belongs to control valve

1657

What is modbus?

1205

what is wave length were using ?

1897

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