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Instrumentation Interview Questions
Questions Answers Views Company eMail

what is The specifications for oriface instalation

1186

Types of contol loops

2 4276

p=hdg,please explain these parameters?

7 32506

In power plant to measure vibration of a turbine we install sensors. Before install this sensor we have to set gap voltage. What is meant by gap voltage and its use?

1146

What is defferent betwen ESP &PCP PUMP .HOW IT IS WORK?

Jindal,

1478

What is the detail function of I/O card in DCS ? Why we dont use the I/O directly with controller?

Kekran Mekran, TCE,

3 12233

why is the sleeve of the cable used for?

Jindal,

2 4568

I have observed in field instrumentation work... I remove the fuse of an analog transmitter then it shows 7.75 kg/sq cm (which is practically wrong value)in DCS and when put the fuse it shows 0 in dcs. Then cheach the field transmitter termination and found moister. clean that and then it shows 1.1 kg/ sq cm which is right value. Please describe the above phenomenon.

1 3075

What is compensation for flow ? Why we use compensation ? What are the factors of different compensation ? We not use then what problems may happen ?

1019

In most process, speed of motor controlled by control system with a reference pot . Now if i start & it becomes uncontrollable, i.e.gets directly start & stop after certain time.Then which reasons can make such problem? can motor may be faulty?how?

Siemens,

3 3869

what is the deferance between LCN and UCN.

1 8576

why used three wire in RTD.

BARC,

8 15712

How to gennerate earth leakage monitoring alarm for solenoid valves in control system?

2 3897

IS there any effect of vortex in low pressure side of the transmiter after the orific in feed water line? if yes then what is the calculation?

1398

why we used for range in pnumatic 3-15 psi and current 4-20 ma?

Jindal,

11 34440


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Un-Answered Questions { Instrumentation }

How many types of sensor

688


If fire would be inside the plant which fire detector is to detected the fire.

663


Draw a great bridge circuit.

1123


what is span value and zero ? and how set ?

593


kindly sent some demo question and answer

1080






What is the PLC configuration in Cement industry?

2826


what is orfics working in main steam line. is it increase pressure, velocity of steam flow and dicrease steam flow rate. or any other

1088


define feed forward control loop with example and drawing?

2284


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

2647


What is loop1 and loop2 in MTS LT?

2668


How does your previous experience relate to the job you are applying for ?

1007


How can a d.p. Transmitter be calibrated?

166


What is the use of each wire in three wire RTD

1545


I wnat to practice more online type questions .so will you show them me to take a practice test?

473


components of control circuit belongs to control valve

783