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Instrumentation Interview Questions

can anybody tel me how a vfd or any field instrument communicates/interface with plc/scada/cs.

1408

1)unmovable objects have frequency or not?if that object have frequency,how do we measure and transmit? 2)how do u measure the continuity without multimeter? 3)we put 24volt dc supply in railway track how many distance it is traveled without voltage drop?

2200

Consider a level troll. i am getting a correct value in 4mA and 20mA. the value in the middle(30 to 60%)is disturbed and i am not getting the appropriate value. what is the solution to normalize the level and to get the correct value..

KNPC,

4963

how to measure temperature from resistance of rtd?and how to measure temp from voltage of thermocouple?is there any formulas?

8568

WHAT IS THE DIFFERENCE BETWEEN DCS & PLC.

10898

1.what is beta in control valves? 2.what is the condition followed by light in LASERs? 3.1kg/cm2=?psi 4.Integral action reduces what? 5.about vena contracta 6.a simple RC circuit 7.thermistor material's temp coefficient of resistance 8.if wave passes through the thicker area of a chord to a thinner area what changes will occur to wavelength? 9.if 4-20 mA represents 0-10 kg/cm2 what will be the current when pressure is 5 kg/cm2.................

1783

Pl send the model question paper of mahagenco account officer post

2096

if in a level tx height is given, how u calculate the ranges of the tx?

5932

how u measure dp in dp tx? how u calibrate a dp tx?

6330

what are the problem's will accure in dcs or plc hadware and what are the solution for it?

4084

whey we conect ammeter in series and voltmeter in parallel in circuit

7707

On LPG sphere tank we used LIT for level indication.High side port is connected to the bottom of the tank while low side port connected to the top. I would like to know how to fill the glycerin on its low side with two condensing pot installed,one from top and the other one for its drain line.Please I need your expertise...thanks

4342

HI, can anybody give details about GAS TREATMENT PLANT CONSTRUCTION,as INSTRUMENTATION ENGINEER what are the responsibilites.what are the instruments mainly instrumentation engineer will deal with

GSM, IOCL,

1422

how magentic flow tx. vortex flow tx & ultrasonic flow tx works and its prinicle?its callibtration prosedure?

3600

what is dry leg and what is wet leg?

20742

what is o2 analyzer and how it measured ,what is the role of this analyzer in cfbc boiler...

1366

Basically iam Instruemntation Engineer, but Iam interested in Instruments design engineering, so plz guide, is there any course, training or Softwres to become Instrument design engineer??.

1414

Describe how to use megger to measure the earth resistance and insulation resistance

1483

Explain types of valves?

485

in which principle pressure tx,level tx ,flow tx,temp tx ,control valve works?

2514

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

3305

Is it ok, to use non-contact type Radar type LT, on a tank that is half circular from the bottom side? If yes the, isn't the waves gonna bent in other directions?

1502

Explain the key components of control loop?

433

Make Heater Process Logic.

1483

What is sensitivity in vibration probes..?

867

please tell me what is a light up procedure of Cfbc boiler and what it's axuillaries of cfbc boiler?

7991

what is the field bus calble ? what are diffrences in orang colur cable and black coular calble ?

2244

How will you calibrate PID controller? explain with example.

1778

SOME OF YOUR QUESTIONS ARE NOT MAKING ANY SENSE SO TRY AND PUT IN A LITTLE BIT MORE EFFORT BEFORE YOU POST A QUESTION. WE WILL ONLY HELP THOSE WHO WE CAN SEE ARE TRYING TO HELP THEMSELVES.

1772

What is upsampling and downsampling?

3445