Why shield is not connected at both end.
Answers were Sorted based on User's Feedback
Answer / deepak munjal
shield is not connected both sides to avoid ground loop
error. Ground Loop error is occur dueto difference in
ground potential at the Shield Connection. It is best to
ground shield at only one end.
| Is This Answer Correct ? | 35 Yes | 2 No |
Answer / muthu s
shield is generally connected at panel(DCS or PLC panels)
side only to avoid the circulation of current which is
produced by stray pick up.Normally current can flow through
closed loop only, and by keeping transmitter end left
opened, there is no possible of current flowing.
| Is This Answer Correct ? | 29 Yes | 3 No |
Answer / s. mitra
To drain out the stray current from the loop. If we connect
both end of shield then the induction of circulating
current will create error in main signal.
| Is This Answer Correct ? | 7 Yes | 0 No |
shielding is first of all resist the melting of temperature ,
the temp to sense has to be inserted in high temp region
| Is This Answer Correct ? | 3 Yes | 37 No |
Define all the process Variable and state their unit of measurement. ?
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...
Dear Sir/Madam, I am attending an interview for ETs in BHEL. I have cleared my written test under Electronics (Instrumentation). This is the first time I am appearing for an interview. Can any one who has attended the interview earlier give me a clue to face the interview. With regards Sindhu
what is pyrometer? which purpose it has to be used?
can any one explain in which term we are flow flow is it volumetric r is it mass? and y
when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??
What is the role of integral in PID controller
Why 4-20mA SIGNAL IS PREFERRED OVEA A 0-10v signal?
What is mean by trim?
Which types of quections asked in interview for FORMULATION PLANT (PHARMA)
Watt is Wrms define rms?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)