Q- Which of the following is Close loop system -
a-)respiratory System b-)traffic light system c-)washing
machine d-)Room heater
my option is A, what is our take on option B & C
Answers were Sorted based on User's Feedback
Answer / rafaqat
Well!!!! close loop system is kind of atumatic system that
have a feed back device which measure the actual value and
then feed this value back to controller then controller
compare the setpoint & the actual value (get from feed back
device)after this control generate + or - signals/
correction to final control element ( that is responsible
for controling the variable quantities).
so if your system have a controller with feedback device,
final control element then it will be a close loop system
Is This Answer Correct ? | 6 Yes | 1 No |
Answer / carl_ellis
A room heater has a thermostat which senses room
temperature and turns the heater elements on or off, as
needed. It is close loop control.
A washing machine can have a closed loop feedback loop, for
example, water level, where a knob sets water level desired
[setpoint], a sensor detects level and turns off water
valve when satisfied. But the overall wash, soak, rinse,
empty, fill, spin functions are sequenced on a timed basis,
which is classic, open loop, non-feedback control.
Likewise a traffic light system can sense the presence of a
vehicle at an intersection, which enables an upcoming light
change, but the sequences of light changes are timer based,
open loop, non-feedback control.
Carl Ellis
Measure First
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / uday
A) respiratory System is a close loop system.
Vertebrates have closed circulatory systems. Their blood flows through blood vessels (arteries, veins and capillaries) and they have a heart to push the blood around their body. The human circulatory system is a closed system.
Is This Answer Correct ? | 0 Yes | 0 No |
what is the difference between signal cable and ontrol cable?
why the positioner output is 3-15psi
If we increase PI controller what will be action.
What is the difference between Analytical instruments and other instruments?
䑰ҕ䔈ҕ䖠ҕ䘰ҕ䛀ҕ䝐ҕ䟐ҕ䢐ҕ䥐ҕŹ
Can anyone help me with the Question bank(objective type) for complete Instrumentation engineering,either a soft copy or a Hard copy(Book),or the name of the author ,or publisher.
What is CNC
How DP Transmitter can be calibrated for crud application in floating roof tank?
what is function of PLC, and how is it work , explain with difination
1 Answers Bapco Bahrain Petroleum Company,
What is capacity of impulse line tube ...answer in psi
1. How can leveltrol be installed in steam drum for measuring the level of steam drum?
can anybody tel me how a vfd or any field instrument communicates/interface with plc/scada/cs.