Safety in Design

Practice Exam Questions - Bank 4

1. This failure design strategy typically uses circuit breakers and fuses as fail-safe devices: (Hammer, 194)

a. fail-down design
b. fail-passive design
c. fail-active design
d. fail-operational design

2. This failure design strategy operates an alternate system until corrective action can be taken: (Hammer, 194)

a. fail-down design
b. fail-passive design
c. fail-active design
d. fail-operational design

3. This failure design strategy is most preferable since there is no loss of function: (Hammer, 195)

a. fail-down design
b. fail-passive design
c. fail-active design
d. fail-operational design

4. Which of the following is not one of the three principal design methods discussed by Willie Hammer to minimize system failure? (Hammer, 196)

a. Safety factors and margins
b. Criteria measurement
c. Failure rate reduction
d. Parameter monitoring

5. This design method to minimize failure, components and structures are designed with strengths far greater than those normally required: (Hammer, 196)

a. Safety factors and margins
b. Criteria measurement
c. Failure rate reduction
d. Parameter monitoring

6. This design method to minimize failure, components and design arrangements are used to produce expected lifetimes far beyond the proposed periods of use: (Hammer, 196)

a. Safety factors and margins
b. Criteria measurement
c. Failure rate reduction
d. Parameter monitoring

7. This design method to minimize failure, temperature, noise, gas concentration, vibration and other specific parameters are under surveillance to ensure they remain within specified limits: (Hammer, 196)

a. Safety factors and margins
b. Criteria measurement
c. Failure rate reduction
d. Parameter monitoring

8. An item designed with a safety factor of 4 would be expected to fail _______ as an item with a safety factor of 2: (Hammer, 196)

a. twice as often
b. half as often
c. just as often
d. more often

9. Which of the following concepts is a refinement of the more inaccurate safety factor? (Hammer, 196)

a. margin of safety
b. safety element
c. safety marker
d. margin of error

10. This term expresses the ratio of strength to stress: (Hammer, 196)

a. margin of safety
b. safety factor
c. stress factor
d. strength-stress margin

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