3 Engineering and Technology Design

Which of the following is the first step in the engineering design process?

• Research and Preparation

• Presentation

• Conceptualization

• Problem Definition and Understanding

What type of interest is calculated only on the initial principal amount?

• Compound interest

• Annual interest

• Simple interest

• Periodic interest

What is the formula for calculating simple interest?

• F = P(1 + in)

• F = P(1 + i)^n

• F = P + Pi

• I = P^2i

Which design process step involves testing prototypes?

• Synthesis

• Optimization

• Presentation

• Evaluation

What is modulus of elasticity also known as?

• Shear modulus

• Young's modulus

• Bulk modulus

• Elastic limit

What is a primary reason for using engineering standards and codes?

• Reduce costs

• Simplify designs

• Ensure compatibility and safety

• Improve aesthetics

What is typically used as the matrix material in composite materials?

• Polymers

• Cement

• Sand

• Wood

Which material is classified as a non-metallic semiconductor?

• Copper

• Aluminum

• Glass

• Silicon

What happens to a material with a low coefficient of thermal expansion when heated?

• It expands significantly

• It absorbs moisture

• It changes color

• It expands very little

Which is a benefit of composite materials compared to conventional materials?

• Cheaper

• More brittle

• Lighter and stronger

• Heavier and more durable