Important RGPV Question
ME–703(D) Reliability Engineering
VII Sem, ME
Unit 1. Reliability
Q.1 Explain about different types of reliability analysis methods. (RGPV Nov 2019)
Q.2 Derive the expression for reliability function R (f) of a reliability system in terms of failure rate. (RGPV Nov 2019)
Q.3 Define the term reliability? Explain the reliability function. (RGPV Dec 2020)
Q.4 Describe the importance of reliability engineering. (RGPV Dec 2020)
Q.5 Differentiate between reliability and quality. (RGPV Dec 2020)
Q.6 What do you mean by Reliability management explain in detail? (RGPV Dec 2020)
Q.7 Gave Some examples of system failures explain any one in detail. (RGPV Dec 2020)
Q.8 Explain the term MTTF. Also derive it with respect to reliability and CDF. (RGPV Dec 2020)
Q.9 What is MTBF? (RGPV Dec 2020)
Q.10 Draw and explain Bath tub Curve. (RGPV Dec 2020)
Q.11 Define: (RGPV Jun 2020)
1) Failure rate
ii) Hazard rate. Explain their application to the reliability of components and repairable system.
Q.12 Discuss bath tub curve (RGPV Jun 2020)
Q.13 Explain the difference between MTTF and MTBF (RGPV Jun 2020)
Unit 2. Basic Probability Theory
Q.1 Explain with examples random variables. (RGPV Nov 2019)
Q.2 Explain Bay’s Theorem in detail. (RGPV Dec 2020)
Q.3 The reliability of a missile is 0.85. If a salvo of two missiles is fixed, what is the probability of at least one hit. (Assume S-independence of missile hits) (RGPV Jun 2020)
Q.4 The mean time to failure of a particular type of component is 800h. What is the probability that a similar component will fail in an operating time of (6) 200 hrs (ii) 400 hrs (iii) 800 hrs (iv) 100 hrs. (RGPV Jun 2020)
Unit 3. Functions of Random Variables
Q.1 Derive expression for mean and standard deviation of exponential distribution. (RGPV Nov 2019)
Q.2 Three power supplier are configured in a standby redundant system with perfect switching. The failure rate for each of the power supplies is constant with a mean time between failures of 20,000 hours. What is the probability of the system failing in less than 1,00,000 hours? (RGPV Nov 2019)
Q.3 A pump operates continuously with a mean time to fail of 200 hours that follows the exponential distribution. A second, identical pump is placed in standby redundancy, and the mean time to fail while the pump is inactive is 1,000 hours. The standby time to fail is also exponentially distributed. What is the mean time to fail for the system, and what is the system reliability at time = 300 hours? (RGPV Nov 2019)
Q.4 Explain with examples, Probability density function and probability distribution function. (RGPV Nov 2019)
Q.5 Justify the use of exponential distribution in reliability evaluation of non repairable system. (RGPV Nov 2019)
Q.6 Describe density functions for different types of discrete and continuous variables. (RGPV Dec 2020)
Q.7 What are time dependent failure models? (RGPV Dec 2020)
Q.8 Differentiate between weibulldistribution, normal distribution and the lognormal distribution. (RGPV Dec 2020)
Q.9 What are Time dependent reliability of components? (RGPV Dec 2020)
Q.10 Explain the relationship between the exponential and Poisson distribution in a reliability context (RGPV Jun 2020)
Q.11 Explain various laws of random events. (RGPV Jun 2020)
Q.12 Show that function (RGPV Jun 2020)
can be a failure density function. Obtain expression for probability of failure with in time r, reliability for time t, and the hazard function 2(1) sketch this function.
Unit 4. Modeling of Geometry, Strength and Loads
Q.1 Explain the concept of Hazard rate with examples. (RGPV Nov 2019)
Q.2 Derive the expression for reliability in terms of Hazard rate. (RGPV Nov 2019)
Q.3 Consider a load-sharing system including two identical components. When both components are working, the hazard rate for individual components is 0.05 per year. However, when one component fails the work load is shifted to the remaining working component and the hazard rate increases to 0.15 per year. (RGPV Nov 2019)
a) Draw a state transition diagram for the system.
b) Derive the stochastic differential equation to model the reliability of each state.
c) Calculate the reliability function of each state.
d) Calculate the MTTF of the system.
Q.4 Derive the expression for reliability evaluation of series and parallel systems. (RGPV Nov 2019)
Q.5 Explain conditional probability method for reliability evaluation of non-series parallel systems. (RGPV Nov 2019)
Q.6 What is an exponential hazard model? Explain (RGPV Jun 2020)
Q.7 A parallel system is composed of ten identical independent components? If the system reliability pis) is to be 0.95, how poor can be components be (RGPV Jun 2020)
Unit 5. Reliability Based Design
Q.1 What is inspection and repair availability model? Explain a case for it. ? (RGPV Dec 2020)
Q.2 Explain Monte Carlo Simulation. ? (RGPV Dec 2020)
Q.3 Give the formulae for safety margin, where the load applied to an item and the strength of the item are assumed to be s-normally distributed. (RGPV Jun 2020)
Q.4 Explain Monto Carlo simulation. (RGPV Jun 2020)
Q.5 What are the objectives of reliability testing? Explain different types of reliability test. (RGPV Jun 2020)
Q.6 Explain Fault Tree Analysis (FTA). (RGPV Jun 2020)
Extra Questions
Q.1 Write short notes on (RGPV Nov 2019)
a) Laws of probability
b) Functions of random variables
c) Monte Carlo simulation.
Q.2 Define Maintainability and availability and compare it with reliability. (RGPV Dec 2020)
Q.3 Explain the measures of central tendency. (RGPV Jun 2020)
— Best of Luck for Exam —
