First Exam(S08) - The Hashemite University Faculty of...

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The Hashemite University Machine Design I Faculty of Engineering Spring 2008 Mechanical Engineering Department Instructor: Dr. Ala Hijazi First Exam Name: _____________________ Part I – Closed Book Student #: __________________ Please Read Questions Carefully – Good Luck! (20 points) 1. For the flowing statements circle the correct answer. Ceramics are ductile and much stronger in compression than in tension. T F Thermoset polymers can not be melted and reformed. T F The main advantages of composite materials are the light weight and that they can stand high temperatures. T F The factor of safety is defined as the ratio of stress to strength. T F If 30 parts fail out of each 100 parts, this means that the reliability is 0.7. T F The Weibul distribution is a three parameter symmetrical bell- shaped distribution. T F Cold working decreases the ductility of the material. T F For a rotating ring, the maximum stress occurs at the outer surface. T F
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This note was uploaded on 10/25/2010 for the course MECHINCAL 2010 taught by Professor علاءحجازي during the Spring '10 term at Hashemite University.

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First Exam(S08) - The Hashemite University Faculty of...

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