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HPCL Instrumentation Interview Questions
Questions Answers Views Company eMail

diffrence b/w accuracy and precision?

4 5790

What is the difference between compensation and extension cable.

11 30765

Foe selecting control valve if i have the min,normal & max data of flow rate,inlet pressure& outlet pressure,inlet tem.&density than how can i assure that these data are correct,pl. let me know if therew there is any method to check it.& also how we assure that the Cv we get from this data is suitable for valve for controlling require flow.

3 6027

Why DP transmitters are subjected to high static pressure test of 100 bar. Though they will be used for very small pressure range

4 6731

Calibration procedure for water rotameters

1261





How to measure density of oil in your kitchen. i.e indirectly to verify the quality of oil using min. gadgets available in the kitchen/house.

1 2941

what is the dp across a orifice plate & how much is permanent pressure across an orifice plate.

2 4944

why metallic housing is provided of solenoid valve.

1 3983

what is gas metering system? gas chromatograph? and gas compressors?

1478

What is the formula to convert mv to temperature in k type thermocouple?pls simply elaborate? I got one ans.it is Temp=mv×25°+atmospheric temp,but here what is 25°,i confusef ,so pls????

2 2194

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HPCL Instrumentation Interview Questions


Un-Answered Questions

Is there any way to find out when one specific table/view/M-view is used last time. i.e. when one specific object is used in any SELECT statement.

370


What is SHS?

107


Explain about interpolation?

1


How could the web element attributes be inspected in order to use them in different locators?

94


What are the parts of excel?

5






Explain the fck editor?

7


How do you calculate the unit weight of concrete?

129


Is php strongly typed?

76


How to remove a directory in perl?

96


What is the difference between DOL starter and star delta starter

91


What will be the value of @@fetch_status if a row that was a part of the cursor resultset has been deleted from the database after the time the stored procedure that opened the cursor was executed?

102


Why is hibernate used?

1


How do you add/remove a payment block for particular invoice ?

1308


Differentiate between count, counta, countif, and countblank in ms-excel.

5


how can we understand that where we have to use ac or dc coil for solenoid valve and why?what is the different between coil of ac and dc explain please.

995