An Polyethylene Bar (E = 1

question 4

Multiple Choice

An polyethylene bar (E = 1.4 GPa, v = 0.4) of diameter 80 mm is inserted in a steel tube of inside diameter 80.2 mm and then compressed
By axial force P. The gap between steel tube and polyethylene bar will
Close when compressive load P is approximately:

• A) 18 kN
• B) 25 kN
• C) 44 kN bar Steeltube
• D) 60 kN Polyethylene d1 d2

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Definitions:

Pulse Oximetry

Measuring the oxygen saturation of arterial blood in a subject by utilizing a sensor attached typically to a finger, toe, or ear to determine the percentage of oxyhemoglobin in blood pulsating through a network of capillaries and that typically sounds an alarm if the blood saturation becomes less than optimal.

Oxygen Saturation

The percentage of hemoglobin binding sites in the bloodstream occupied by oxygen, an important indicator of respiratory function.

Ishihara Method

A test for color blindness that uses a series of plates with colored dots to form numbers or shapes distinguishable only to those with normal color vision.

Color Vision Acuity

The ability of the eye to distinguish and identify different colors accurately.