Engineering Economics
A ______ is a market situation where economies of scale are so significant that cost are only minimized when the entire output of an industry is supplied by a single producer so that the supply costs are lower under monopoly that under perfect competition.

Perfect monopoly
Natural monopoly
Ordinary monopoly
Bilateral monopoly

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Engineering Economics
Which one of the following questions is relevant to the construction estimates?

All of these
Did the estimators precisely evaluate site conditions
How much money will the contractor's risk, loosing if he were to submit bid on the raw estimate of cost
Did the estimators use short cut methods which may be unrealistic in their situation

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Engineering Economics
In a cash flow series:

Either an increase or decrease in the amount of a cash flow is called the gradient
Uniform gradient signifies that an income or disbursement changes by the same amount in each interest period
All of these
The gradient in the cash flow may be positive or negative

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