Clevis and Pin $\left( d _ { p } = 15 \mathrm {~mm} \right)$

question 9

Multiple Choice

$\text { A steel rod } \left( E _ { s } = 210 \mathrm { GPa } , d _ { r } = 12 \mathrm {~mm} , \text { cte } _ { s } = 12 \times 10 ^ { - 6 } / { } ^ { \circ } \mathrm { C } \right) \text { is held stress-free between rigid walls by a }$ clevis and pin $\left( d _ { p } = 15 \mathrm {~mm} \right)$ assembly at each end. If the allowable shear stress in the pin is $45 \mathrm { MPa }$ and the allowable normal stress in the rod is $70 \mathrm { MPa }$ , the maximum permissible temperature drop $\Delta T$ is approximately:

• A) \(14 ^ { \circ } \mathrm { C }\)
• B) \(20 ^ { \circ } \mathrm { C }\)
• C) \(28 ^ { \circ } \mathrm { C }\)
• D) \(40 ^ { \circ } \mathrm { C }\)

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Definitions:

Risky Assets

Assets that come with a higher degree of investment risk, typically with the potential for higher returns.

Standard Deviation

A statistical measure of the dispersion or variability in a dataset, commonly used in finance to quantify the risk associated with an investment's return.

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An asset that supposedly carries no risk of financial loss and is expected to return its full value along with known interest or dividends.