Engineering Economics
Pick up the correct reason for making conceptual (or preliminary) estimate from the following:

To compute target estimate for the owner while drawing and specifications are in initial stage
To have a check on a definitive cost estimate
All of these
To check quotations from contractors and/or sub-contractors

ANSWER DOWNLOAD EXAMIANS APP

Engineering Economics
Perfect monopoly exists only if:

the single vendor can prevent the entry of all other vendors in the market
the single vendor is the only one who has the permit to sell
the single vendor gets the absolute franchise of the product
the single vendor is the only one who has the knowledge of the product

ANSWER DOWNLOAD EXAMIANS APP