Instrumentation Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Instrumentation Interview Questions

Questions Answers Views Company eMail

WE Know that different supply voltage of solenoid valve like 24,110,220 etc..how we check the solenoid supply is 24v or 220 NOTE: No specification at device.

OMV,

2 10084

In RS 500 SLC 5/03 input change one module card to another card, plz. give steps clearly.

BHL,

2918

What is capacity of impulse line tube ...answer in psi

Shell,

2 11561

Any one can help me to identified, how can we interchange the device in FF

Ion Exchange,

2840

What is the procedure of DP switch calibration

NOCL,

2 11024

What is Cavitation?

Gujarat Borosil,

2 8271

What is Trim?

Gujarat Borosil,

1 11143

What is scan time of PLC?

Gujarat Borosil,

2 13798

What are the logic behind 2x2 and 2x3 logic and more when ask in interviews

Reliance,

1 5038

which transister (npn or pnp) is used in vibration monitoring for negative voltage?

2 8297

What is the difference between bench set and operating range i control valve?

Descon,

1 8386

why use to 250 ohm for hart protocol and why hart communicator not communicate without 250 ohm

OMV,

4 16464

how to calibrate TT transmitter

3 14718

What is rtd output signal

Nestle,

4 17442

How can test or measure the probe and extension cable to identify if the problem at the probe or cable or at the driver it self? (pleast notify the measuring method)

2649

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Un-Answered Questions { Instrumentation }

What is difference between Ionization heat and bimetallic heat

1730

What is difference between “Fault Tolerant” & “Fault avoidance” PLC? Application where these system s are used?

3982

Which topics are covered in Process Control?

2215

what is a vortex flow meter,mass flow meter and electromagnetic flow meter.particular use of this.means in which condition particular meter is used.

2283

What is solenoid valve? Where it is used?

1160

how to work MIL contol valve posistioner ?

2204

what about your moleg in pogrees with company

2331

Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem

2181

what is the calibration procedure for magnetic flow meter @ onsite

1707

what is moisture probe? What are there types? What is there working principle and how they works? guys this is one of technical question I had ask in interview. If you know its answer please let me know. The interviewers were more interested in microwave moisture probe, so if you find its any link please just forward me on my mail id.avinash1200@gmail.com Thanks in advance.

2118

What is 1:1 redundancy ?

2447

Why all the drains(Gland sealing,ESV,Casing inlet etc) are directly connected to the flash tank instead of hotwell of the condensor in the power plant? My Email Id:naba02222@gmail.com

2346

What is three element drum level control system why its better than single element?

2626

can anyone tell me about the basic concepts to consider before to start a PLC panel wiring

1990

why micro controller 8051/52's clock frequency is internally divide by 12 ?? and why it is further divide by 32 in UART serial communication ??

7626

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