Interview Questions Answers in Instrumentation

gobinath

{ City } chennai
< Country > india
* Profession * lead engineer - c & i
User No # 45157

Total Questions Posted # 0
Total Answers Posted # 3

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Questions / { gobinath }

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Answers / { gobinath }

Question { Adani, 11385 }

What is DCS?

Answer

DCS Means Distributed control system. This is working as a
master control system of full entire plant. its communicate
with all node control system (field Sub control PLC's and
control & execute the all closed loop process.

DCS -------- PLC 01
|---- PLC 02
|---- PLC 03

Is This Answer Correct ?

9 Yes

0 No

Question { 91374 }

what is difference between 1/2"NPT & M20 x 1.5 cable gland?

Answer

1/2" NPT size of theard for cable gland

M20x1.5 Cable gland for 1.5 sq mm cable

In General two typs of Theard mounting avilable.
1. mm theard
2. Inch Theard

Here 1/2" NPT - Inch Theard

Is This Answer Correct ?

21 Yes

42 No

Question { 15303 }

which type of rtd is good for any system,2wire,3wire or 4
wire

Answer

But Generally 3 wire RTD only preparred for Industrial
purpose. Most of the Industires & Design document suggest 3
wire RTD is suitable for any application.

Is This Answer Correct ?

16 Yes

5 No