A Simply Supported Beam (L = 4 $q = 25 \mathrm { kN } / \mathrm { m }$

question 3

Multiple Choice

A simply supported beam (L = 4.5 m) with rectangular cross section (b = 95 mm, h = 280 mm) supports uniform load $q = 25 \mathrm { kN } / \mathrm { m }$ . The ratio of the magnitudes of the principal stresses $\left( \sigma _ { 1 } / \sigma _ { 2 } \right)$ at a point $a = 1.0 \mathrm {~m}$ from the left support and distance $d = 100 \mathrm {~mm}$ up from the bottom of the beam is approximately:

• A) 9
• B) 17
• C) 31
• D) 41

Analyze financial data within the manufacturing industry to calculate key financial metrics.

Grasp the economic significance of the manufacturing sector and its key performance indicators.

Understand and calculate the cost of goods manufactured.

Determine occupancy rates for a service entity like a hotel.

---

Definitions:

Coarse Focus Knob

A control on a microscope that allows the user to make large adjustments in focus, moving the objective lens closer to or further from the specimen.

Lens-cleaning Solution

A specially formulated liquid used for cleaning and disinfecting optical lenses, including those in eyeglasses and cameras.

Brownian Movement

The random motion of particles suspended in a fluid, resulting from their collision with the quick atoms or molecules in the gas or liquid.

Molecules

The smallest particle of a chemical element or compound that can exist independently while retaining all the properties of that element or compound.