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Question
what is the difference between Digital output DO signals /Commands for  
start/stop  and Solenoid valves ??
 Question Submitted By :: Instrumentation
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
DIGITAL OUTPUTS SIGMALS MEANS NO OR NC CONTACTS & DO COMMANDS
MEANS CONTACT CHANGE OVER ALONG WITH VOLTAGE 24 V DC 0R 230 V
AC
 
Is This Answer Correct ?    0 Yes 0 No
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Other Instrumentation Interview Questions
 
  Question Asked @ Answers
 
how bolometer is used in temperature measurement ??   1
how to connect 3 wire 4-20 mA transmitter in Plc system PLC system and how explain how the measuring data communicate with plc system.   1
what should be the distance of vibration sensor & to the point where vibration to be measured Ex turbine axial displacement   2
When we will do simulation for I/P?IF WE DO SIMULATION through which way either series or parallel? TVS 1
what is the difference between venturi and orifice meters?   5
What is the expansion of RADAR? How it works? RasGas 7
who's take first position in process in the timing of new installation flow transmitter and control vavle. give the answer with logical trick.   2
how to know power plant process with corresbonding laws&thoeries Bhel 1
whats the reason for control valve not installed -90degree (down position)   1
flow transmitter range is 0 -500 mmwcc but the transmitter shows 12 ma for o mmwc instead of 4 ma ...how to solve this problem when we apply 375 mmwc it shows 16 ma   3
what is difference between venturi and orifice   1
What is surge in compressors? How to detect and control it? DEWA 1
 
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