PTU M.Tech EC Engineering Paper 2012 Reliability of Electronics & Communication Systems

PTU M.Tech EC Engineering Paper 2012 Reliability of Electronics & Communication Systems Punjab Technical University Exam 2012 Reliability of Electronics & Communication Systems Test September and March Question Paper Free Download Punjab Technical University Reliability of Electronics & Communication Systems Question Papers 2012 PTU M.Tech EC Engineering Question Paper 2012 for all students Previous Year old Past Papers of PTU M.Tech EC Engineering Paper 2012 Reliability of Electronics & Communication Systems Punjab Technical University September 2012 and March 2012 Exam M.Tech EC Engineering Sample Model Question Papers Free Download PDF

Reliability of Electronics & Communication Systems

 

Qi) (a) Define MTBF and MTTR. A component has MTBF = 200 hr and rvlTI’R = 10 hr with both the failure and repair distribution exponential, what is the availability at 10 hr, for first 10 hour and at steady state?
(h) A system has 5 independent and identical components of which each component has random chances of 1 in 100 failing If failure follow binomial distribution. What is the probability of two failures?
Q2) (a) Consider the probability density function.
J ().002e°°°2’ t 0
t(’)= fort isinhours
{o otherwise
Calculate reliability function, failure times, and design life is reliability of 0.95 is desired.
(b) Discuss constant failure rate model with suitable example.
Q3) (a) A microwave transmitter has exhibited a constant failure rate of 000034 failures per operating hour, which gives non-acceptable design life (0.95 reliability) of 1 50 hours. A second redundant transmitter is added (parallel). What is design life of the new system? What will failure rate and hazard rate function of this redundant system?
(b) What are time dependent failure rate models? Discuss with suitable example.

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PTU M.Tech EC Engineering Paper 2012 Reliability of Electronics & Communication Systems


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