A telephone switchboard 100 pair cable can be made up with either enameled wire or tinned wire. There will be 400 soldered connections. The cost of soldering a connection on the enameled wire will be P 1.65 on the tinned wire, it will be P 1.15. A 100- pair cable made up with enameled wire cost P 0.55 per linear foot and those made up of tinned wire cost P 0.75 per linear foot. Determine the length of cable run in feet so that the cost of each installation would be the same ?

A. 1,000 feet
B. 1,040 feet
C. 1,100 feet
D. 1,120 feet

Perfect monopoly exists only if_______________?

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

Which one of the following parameters is accurate for DGPS ?

A. Positional accuracies ~ 1 – 2 m if rover is less than 1-2 km from the reference station
B. Positional accuracies ~ 2 – 5m if rover is less than 2-5 fm from the reference station
C. Positional accuracies ~ 5 – 10 m if rover is less than 5-10 km from reference station
D. Positional accuracies ~ 5 – 10 m if rover is less than 25 km