Q: A company is considering two alternatives for a new manufacturing process: Option A costs $$10,000 and Option B costs 17$$,500. Installation costs are $$3,500 for A and 5$$,000 for B. What is the incremental cost of choosing Option B over Option A?

$$9,000 \text{ (Purchase price difference: } 17,500 - 10,000 = 7,500 \text{; Installation: } 5,000 - 3,500 = 1,500 \text{; Total: } 7,500 + 1,500 = 9,000 \text{)}$$

Q: Which formula is used to calculate the inflation rate between two periods using Consumer Price Index (CPI) values?

$$\text{Inflation Rate} = \frac{\text{Current CPI} - \text{Past CPI}}{\text{Past CPI}} \times 100$$

Q: A company has a learning curve rate of 85% and produces 16 units with a unit production time of 5 minutes. If $$b = \frac{\log(0.85)}{\log(2)}$$, what is the initial production time $$T_1$$?

$$T_1$$ = \frac{5}{$$16^{-0.2345}$$} \approx 9.6 \text{ min}$$

Question 1

Which of the following best describes the primary purpose of engineering economic analysis?

Accepted Answer

To compare alternatives on an economic basis after they have been identified.

Question 2

In the context of engineering economics, what is the main difference between macroeconomics and microeconomics?

Accepted Answer

Macroeconomics analyzes the behavior of whole economies, while microeconomics focuses on individual units and supply-demand.

Question 3

A company is considering two alternatives for a new manufacturing process: Option A costs $$10,000 and Option B costs 17$$,500. Installation costs are $$3,500 for A and 5$$,000 for B. What is the incremental cost of choosing Option B over Option A?

Accepted Answer

$$9,000 	ext{ (Purchase price difference: } 17,500 - 10,000 = 7,500 	ext{; Installation: } 5,000 - 3,500 = 1,500 	ext{; Total: } 7,500 + 1,500 = 9,000 	ext{)}$$

Question 4

Which formula is used to calculate the inflation rate between two periods using Consumer Price Index (CPI) values?

Accepted Answer

$$	ext{Inflation Rate} = \frac{	ext{Current CPI} - 	ext{Past CPI}}{	ext{Past CPI}} 	imes 100$$

Question 5

Which of the following is an example of a sunk cost in engineering economics?

Accepted Answer

The amount paid to purchase a CNC machine four years ago.

Question 6

What is the main role of the Bank of Canada as described in the course materials?

Accepted Answer

To promote the economic and financial welfare of Canada by controlling inflation and managing monetary policy.

Question 7

If a product design change is made later in the life-cycle, what is the likely impact on cost?

Accepted Answer

The cost will increase because later changes are more expensive.

Question 8

Which of the following best describes opportunity cost?

Accepted Answer

The potential benefits missed when choosing one alternative over another.

Question 9

A company has a learning curve rate of 85% and produces 16 units with a unit production time of 5 minutes. If $$b = \frac{\log(0.85)}{\log(2)}$$, what is the initial production time $$T_1$$?

Accepted Answer

$$T_1$$ = \frac{5}{$$16^{-0.2345}$$} \approx 9.6 	ext{ min}$$

Question 10

Which of the following is NOT a typical step in the engineering decision-making process?

Accepted Answer

Ignore possible outcomes and choose randomly

Question 11

Which cost estimation model is best suited for scaling previous known costs up or down for industrial plant and equipment?

Accepted Answer

Power Sizing Model

Question 12

What is the formula for calculating the total cost in engineering economics?

Accepted Answer

$$	ext{Total Cost} = 	ext{Fixed Cost} + 	ext{Variable Cost}$$

Question 13

Which of the following is a characteristic of a recession?

Accepted Answer

Two consecutive quarters of economic decline as reflected by GDP.

Question 14

Which of the following is considered a non-recurring cost?

Accepted Answer

An accident due to equipment breakdown.

Question 15

What is the main ethical dilemma often faced in engineering decision-making?

Accepted Answer

Balancing safety and cost in project decisions.

Question 16

Which of the following best describes the law of supply and demand?

Accepted Answer

As price increases, people are willing to supply more and demand less.

Question 17

Which curve represents the relationship between the price level and the quantity of domestic product demanded in macroeconomics?

Accepted Answer

Aggregate demand (AD) curve

Question 18

What is the main purpose of cost indexes in engineering economics?

Accepted Answer

To record historical changes in costs and update estimates.

Question 19

Which of the following is a direct cost in engineering economics?

Accepted Answer

Labor and direct materials

Question 20

If the CPI in 2006 is $$250 and in 2010 is 290$$, what is the inflation rate between these years?

Accepted Answer

$$\frac{290 - 250}{250} 	imes 100 = 16\%$$

Introduction to Engineering Economics: Foundations for Financial and Economic Decision-Making

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드