A Rectangular Plate in Plane Stress Is Subjected to Normal $\sigma _ { x } = 35 \mathrm { MPa } , \sigma _ { y } = 26 \mathrm { MPa }$

question 1

Multiple Choice

A rectangular plate in plane stress is subjected to normal stresses $\sigma _ { x } = 35 \mathrm { MPa } , \sigma _ { y } = 26 \mathrm { MPa }$ , and shearstress $\tau _ { x y } = 14 \mathrm { MPa } .$ The ratio of the magnitudes of the principal stresses $\left( \sigma _ { 1 } / \sigma _ { 2 } \right)$ is approximately:

• A) 0.8
• B) 1.5
• C) 2.1
• D) 2.9

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Definitions:

Factor Prices

The prices of inputs used in the production of goods or services, such as labor, capital, and raw materials.

Marginal Cost

The cost added by producing one additional unit of a product or service.

Marginal Cost Curve

A graphical representation showing how the cost of producing one additional unit of a good changes as production volume changes.

Total Fixed Costs

Expenses that do not change with the level of output or sales, such as rent, salaries, and insurance premiums.