Operations Management 6Th Canadian Edition By William – Test Bank
Chapter 04S
Reliability
True / False Questions
1. An important dimension of reliability relates to a “prescribed set of conditions”.
TRUE
Accessibility: Keyboard Navigation
Difficulty: Easy
Learning Objective: 04S-01 Define reliability and state two ways of using it.
Topic: 04S-01 Defining Reliability and Stating Two Ways of Using It
2. One operational definition of reliability is the probability that a product or system will function when activated.
TRUE
Accessibility: Keyboard Navigation
Difficulty: Easy
Learning Objective: 04S-01 Define reliability and state two ways of using it.
Topic: 04S-01 Defining Reliability and Stating Two Ways of Using It
3. If a system is composed of two parts which must both operate, and each has a probability of .7 of operating, it is more likely than not that the system will fail.
TRUE
Accessibility: Keyboard Navigation
Difficulty: Medium
Learning Objective: 04S-02 Find probability of functioning when activated; and explain the purpose of redundancy in a system.
Topic: 04S-02 Finding Probability of Functioning When Activated
4. “Independent components” cannot exist in the same product.
FALSE
Accessibility: Keyboard Navigation
Difficulty: Medium
Learning Objective: 04S-02 Find probability of functioning when activated; and explain the purpose of redundancy in a system.
Topic: 04S-02 Finding Probability of Functioning When Activated
5. A component in a product can be considered an “independent” component if it has no relation to whether any other component in the product functions or not.
TRUE
Accessibility: Keyboard Navigation
Difficulty: Easy
Learning Objective: 04S-02 Find probability of functioning when activated; and explain the purpose of redundancy in a system.
Topic: 04S-02 Finding Probability of Functioning When Activated
6. Events can be considered “independent events” if they have no relation to the occurrence or non-occurrence of each other.
TRUE
Accessibility: Keyboard Navigation
Difficulty: Easy
Learning Objective: 04S-02 Find probability of functioning when activated; and explain the purpose of redundancy in a system.
Topic: 04S-02 Finding Probability of Functioning When Activated
7. Redundancy in product design refers to backup parts or systems.
TRUE
Accessibility: Keyboard Navigation
Difficulty: Easy
Learning Objective: 04S-02 Find probability of functioning when activated; and explain the purpose of redundancy in a system.
Topic: 04S-02 Finding Probability of Functioning When Activated
8. Availability measures the fraction of time a piece of equipment or a repairable product is expected to be available for operation.
TRUE
Accessibility: Keyboard Navigation
Difficulty: Easy
Learning Objective: 04S-03 Find probability of functioning for a given length of time; and define failure rate per hour; mean time to failure; and availability.
Topic: 04S-03 Finding Probability of Functioning for a Given Length of Time
