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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 10983

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 11113

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

3 11893

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

7 12442

Where & Why we are using SURGE PROTECTION ?

4 8298

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

2081

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

2701

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

2 8336

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 8622

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

2 4731

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

3 8607

What is safety barrier and how it is work

2 3957

difference between repeatability and reproductability

1 3537

what is stability

2 3849

difference between span and range

3 15590

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IOCL Instrumentation Interview Questions


Un-Answered Questions

i have a interlock pavement work.i need to compact about 2000 sq metres of sub base grade c of thickness 15 cm.what is the amount of water required for compaction ??

1646


Is mshta exe a virus?

510


what are types of walsh code in cdma.

2065


how do I protect python code?

460


Where is the menu icon?

99






What is DBSqlPassThrough?

2651


What is difference windows 7 and windows 10?

410


What is NATO? List some members of NATO?

683


Explain the growth curve of S. pneumo ?

1603


How do you check if two values are the same in excel?

303


How to convert bytes to a string?

474


What is your worst character trait?

755


Explain what is a database?

652


What is the value of inventory as per Financial Accounts (AS2) and as per Cost accounts? Someone told me that as per cost accounts only works costs is considered in CARR while for FA, AS2 is followed with cost or NRV whichever is lowewr? Please explain the difference.

1696


what is the purpose of deploying local dns servers? : Windows server 2008

112