Private Pilot Written Practice Exam #1

The basic purpose of adjusting the fuel/air mixture at altitude is to {Ans: decrease the fuel flow in order to compensate for decreased air density.}Which VFR cruising altitude is acceptable for a flight on a Victor Airway with a magnetic course of 175°? The terrain is less than 1,000 feet. {Ans: 5,500 0-179 degrees: odd thousand plus/minus 500 feet 180-359 degrees: even thousand plus/minus 500 feet}When telephoning a weather briefing facility for preflight weather information, pilots should state {Ans: whether they intend to fly VFR only.}One weather phenomenon which will always occur when flying across a front is a change in the {Ans: wind direction.}What should an owner or operator know about Airworthiness Directives (ADs)? {Ans: They are mandatory.}After landing at a tower-controlled airport, when should the pilot contact ground control? {Ans: When advised by the tower to do so.}