Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / rajkumar
Systems, predominantly computing and computer-based systems,
which tolerate undesired changes in their internal structure
or external environment. Such changes, generally referred to
as faults, may occur at various times during the evolution
of a system, beginning with its specification and proceeding
through its utilization. Faults that occur during
specification, design, implementation, or modification are
called design faults; those occurring during utilization are
referred to as operational faults, The use of fault
tolerance techniques is based on the premise that a complex
system, no matter how carefully designed and validated, is
likely to contain residual design faults and to encounter
unpreventable operational faults.
Generally, fault tolerance techniques attempt to prevent
lower-level errors (caused by faults) from propagating into
system failures. By using various types of structural and
informational redundancy, such techniques either mask a
fault (no errors are propagated to the faulty subsystem's
output) or detect a fault (via an error) and then effect a
recovery process which, if successful, prevents a system
failure. In the case of a permanent internal fault, the
recovery process usually includes some form of structural
reconfiguration (for example, replacement of a faulty
subsystem with a spare or use of an alternate program) which
prevents the fault from causing further errors. Typically, a
fault-tolerant system design will incorporate a mix of fault
tolerance techniques which complement the techniques used
for fault prevention
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
How can we use feedback signal frm rtd for monitoring and in dcs for controlling ,then which type of rtd is sutaible 2 , 3,4wire and why ?
I want to buy a seal kit of a pneumatic power cylinder.But I don't know it's specification.So please help me to know its specification.
what is the minimum power (P=VI)to produce a spark?
on interface level transmitter model(RTG3302-EMERSON) What is threshold valve how can we select correct threshold value T1,T2,T3,T4 When interface water & hydro carbon
how to calibrate 0- 150 psi presure gauge by dead weght tester
hello sir/madam, I,Subramanian need 5yrs placement papers of officer trainee of Instrumentation technology.pls send to this mail id mani_nxtgen@yahoo.co.in please do the needful. with regards, subramanian.v
can any one explain in which term we are flow flow is it volumetric r is it mass? and y
For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?
What is surge and how is it prevented, what is the purpose of bypass valve across AS valve.
how to calibrate electro pneumatic positioner 8013 mil controls ltd ?gsr
the whole paper was based on Transducers..questions like define repeatability, error,accuracy,precision..den there were many q. on the conversion of Pa to mmHg and other units.. also..der wer few Q. on some level sensors(with diagram)
Area classification, Equipments, Gas groups, temperature classification, Ingress protection, Fire Extinguishers.
how many type of plug are used in pneumatic control valve,name them.
what is the imbustion control loop
Question on maha cement
