ECONOMICS Flashcards
Engineering economy is that branch of economics which involve the application of definite laws of
economics, theories of investment and business practices to engineering problems involving cost.
Arreola
It is also defined to be the study of economic theories and their application to engineering problems
with concept of obtaining the maximum benefit at the least cost as a basis for decision.
Arreola
It also involves the study of cost features and other financial data and their application in the field of
engineering as a basis for decision.
Arreola
Engineering economics is equated with practicality and economic feasibility. It is also the search for the
recognition of alternatives which are then compared and evaluated in order to come up with the most practical
design and creation.
Kasner
An important use of engineering economy is
to seek new objectives for engineering application. Engineers are constantly seeking new and wider
application of their technical knowledge for the benefit of mankind and in line with this, engineering economy
provides basic principles and laws.
Seeking new objectives
upon knowing the
objectives, next is to determine ways and means to attain such objectives. With Engineering Economy the
so-called limiting factors which may hinder the success of a project are being discovered.
Discovery of factors limiting
– The principles of engineering economy
helps to point out the analysis of choosing the best alternatives on a quantitative basis.
Comparison of alternatives
– Engineering economy enables engineers to consider
all aspects of investment from both the technical and financial viewpoints. It provides several patterns of
analysis to determine rate of return, annual costs and pay out periods, which all serves as bases for
decision.
Analysis of possible investment
– Engineers‟ main concern is on future actions, that is on
what to do and not on what has been accomplished. Decisions on future actions are more valid and accurate
if the principles of engineering economy are correctly applied.
Determination of bases for decision
later part of the
19
th
century made use of engineering economic analysis in building railroads in the U. S. In 1930,
Arthur Wellington
published his book, Principles of Engineering Economy, which emphasized on techniques that depended on
financial and actuarial mathematics.
Eugene Grant
The choice is among alternatives.
Develop the alternatives.
Only the difference in expected outcomes is considered.
Focus on the differences.
Prospective outcomes of the alternatives, economic, etc.
should be considered.
Use a consistent viewpoint.
Using a common unit of measurement of the possible
outcomes in comparing alternatives.
Use a common unit of measure.
Consider both monetary and other unit of measure in
measurement of outcomes.
Consider all relevant criteria.
Uncertainty is inherent in projecting future outcomes and
should considered in their analysis and comparison.
Make uncertainty explicit.
Projected results and decisions should be compared with actual
results to improve the decision process.
Revisit your decisions.
– those that are unaffected by changes in activity level over a feasible range of operations for the
capacity or capability available. (Insurance and taxes on facilities, general management and administrative
salaries, license fees and interest costs of borrowed capital)
Fixed cost
are those associated with an operation that vary in relation to changes in quantity of output or
other measures of activity level. For the example, the cost of materials and labor used in a product or service
are variable costs – because they vary with the number of output units even though the costs per unit stay
the same.
Variable cost
(incremental revenue) – refers to the additional cost or revenue that will result for increasing
the output of a system by one of more units. This is often quite difficult to determine in practice. Thus, if to
produce 100 units will cost P200, and the total cost for producing 110 units is P215, then the increment cost
for additional 10 units is P15 or 1.50 per unit.
Incremental cost
costs that are repetitive and occur where an organization produces similar goods or services
on a continuing basis. Variable cost are also recurring costs, because they repeat with each unit of output.
Fixed cost that is paid on a repeatable basis is a recurring cost (ex. office space rental)
Recurring costs
are those that are not repetitive even though the total expenditures maybe cumulative
over a relatively short period of time. Usually it involves the developing or establishing a capability or capacity
to operate.
Non-recurring costs
those that can be reasonably measured and allocated to a specific output or work
(Labor and materials).
Direct cost