Can any body tell me about SAP MAINTINANCE MODULE. WHAT IS its function and application. And study material Source about it. I shall be very thankful.

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in any transimitter (flow/level) there are three terminals for supply& test (+,-,+)in two wire,24VDC given to Tx.,but how 4-20 ma signal travels thru same wire (as it is for 24VDC input supply)?

1 Answers   Jindal, UltraTech,

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Paper Details: company -- Hindustan Copper Limited post -- GET 2008 Date -- 03.08.2008 Dept.-- Electronics?Instrumentation Aptitude -- 70 Technical-- 80 Total Time -- 2hr 30min I have listed the question I could able to remember 1. BCD equivalent of 43 2. value of K for stability of a system from a given equation 3. transformer connection for darlington connection 4. damping of balastic galvanometer 5. advantage of chart-pen recorder over CRo 6. CRO - how to change bandwidth 7. questions on CRO construction 8. reverse saturation current of si diode 9. advantage of wire wound resistance over carbon resistance 10. core material for a small coil 11. max fanout-- TTL/ECL/CMOS/MOS 12. component of resistance of monolithic IC 13. functions of capacitors in multivibrators 14. to change a sawtooth signal into a square wave we use-- schmit trigger/ schottkey diode/ zener diode 15. relation b/w á & â in transistor ckt 16. function of SiO2 layer in fabrication 17. 3 questions on ODD MAN OUT

2 Answers   HCL, L&T,

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How does a redundant controller comes in line when the main controller fails??

3 Answers   Yokogawa,

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what is the principal of flow transmeter,level trans meter,presser transmeter?

11 Answers   Nestle, Reliance,

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why I need valve guard and whats different between guard and positioner ??

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our kks tagging is crossing more than 12 character please suggest how to take tags in the DCS

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How to calibrate Magnetic flow Transmitter in Field

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Q- What are the application in which PNP transistor is preferred over NPN ?

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i need some objective type questions in instrumentation

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how manys ways dp transmitter can be calibrated having range of -150 to 400mmwc,what side pressure u will apply?

3 Answers  

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how to calculate density?

2 Answers  

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