The Chief Design Engineer for Colonial Warning Systems Wants to Know

question 56

Multiple Choice

The chief design engineer for Colonial Warning Systems wants to know the reliability of a two-lamp device intended to warn the operator of potential problems with a commercial steam kettle.One (either) lamp is to be lit if steam pressure drops below the desired level,and two (both) are to be lit if temperature drops below a desired level.His supplier estimates that a lamp has a failure rate of .2 per hour of operation,and a mean wear-out time of seven years with a standard deviation of eight months.If the temperature drops below the desired level,what is the probability the system will perform reliably for one hour?

• A).04
• B).40
• C).60
• D).64
• E).96

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Definitions:

Labor Hours

The total number of work hours spent by employees on a given task or project.

Objective Function

Describes the formula or model that a decision-making process seeks to optimize.

Minimize Cost

The process of finding the strategy or path that leads to the lowest possible cost while satisfying all constraints and meeting all requirements.

Wholesale Cost

The price charged for goods and services when sold in large quantities for resale by the purchaser.