y v r connecting 250 ohms resistor in series when u
cummunicate with BT in bench calibration?

Answer Posted / bhu

because it raise the stenghth of a signal

Is This Answer Correct ?    1 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How an rtd work, and what volts/current goes to a rtd to measure the resistance?

734


how can use ram

1483


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

1734


Draw a P& ID showing – orifice flange, plate, dp transmitter, isolation & bypass valves and tubing.

1500


what is isloted barrier how it works and what are the main purpose.how it make safe area.

1594






Dear Sir/Madam,im going to attend Hpcl written exams on feb 17th in instrumentation stream..can anyone send me the HPCL model papers and pattern of HPCL ....i ve not yet attended anything in HPCL...so i dont know how it comes...so just i need some model test papers and pattern ..pls help me friends...

1632


why direct mounted pressure transmitters is always installed with DBB ( double bleed block) valve in process line or top of the tanks ?

1582


How servomotor controls throttle valve of TURBINE?

1499


how can we tune a PID. If it is by zeiger nichols method..please explain briefly with help of an example.

2012


flow transmitter formula?

2363


what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?

1507


draw the block diagram of a level transmitter ?

1930


1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling

1959


what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?

1758


The Design Calculation of Level Transmitter For Different Structure open & Closed Vessel, Eg. Diff. Level Tx., Capacitance For Continous Operation

2336