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IOCL Instrumentation Interview Questions
Questions Answers Views Company eMail

HOW MANY METHODS OF TEMPERATURE MEASUREMENT ? HOW MANY MEASURING DEVICES / TRANSDUCERS ?

6 9136

can we replace a pressure transmitter of range 0 to 25 Kg/cm2 by a Pressure transmitter of range 0 to 10 Kg/cm2 ?.. Will it affect 4 to 20 mA output signal which we will feed to the PLC.

9 9219

Explain about 4 wire instrument concept & tell about its wiring fron sensor in Field to PLC panel.Explain with an example?

3 10923

Explain about relays.. Can we give both AC and DC to the same relay... How it is energising.. Explain its working..

7 10339

Where & Why we are using SURGE PROTECTION ?

4 6914





1.can you use SCADA instead of DCS,DCS instead SCADA 2.Difference between DCS and PLC,can their role be reversed i.e. role interchange 3.Difference between RTU and PLC

1738

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

2331

WHAT IS SELF CLEAN ELCTRODE IN MAGNETIC FLOWMETER?? WHAT DO YOU MEAN BY THIS TERM??

2 7261

how to set calibration range in a DP transmitter to measure level for a closed tank and for an open tank,and also please explain me how to set calibration range for a DP flow transmitter in a line ?

1 7852

in current transmitter why we use 4-20ma ???

2 3936

Yokogawa mass flow meter shows negative reading...what r the main causes for this problem?...

3 6911

What is safety barrier and how it is work

2 3132

difference between repeatability and reproductability

1 2657

what is stability

2 2792

difference between span and range

3 12650

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IOCL Instrumentation Interview Questions


Un-Answered Questions

State the criteria which a trusted publisher should meet before adding him?

217


Discuss the concept of yagni.

203


What is abstract class in oops?

252


Define self join?

274


What are Canines?

207






Inline parameters : What does the compiler do with the parameters of inline function, that can be evaluated in runtime ?

1659


What kind of database is excel?

98


How do you usually persist data on ios? : IOS Architect

212


What is the shortcut to open file explorer?

210


What do you think about the latest algorithm update from google?

201


Main Components of Hadoop?

225


In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?

282


Android asynctask create new thread in background?

217


What Is Encryption?

260


What is an accounting loss?

283