PPL - Aircraft General Knowledge The test consists of 12 questions. You are given 25 minutes to complete. To pass you need to score 75% Login or personal details are not required. Should you desire to download a Certificate of Accomplishment if you pass, do not forget to fill your name (as you want it written on the Certificate), at the end of the quiz. The purpose of a cockpit mounted compass deviation card is to: show the difference between the aircraft magnetic track and true north. correct the compass headings for ferrous items that may be added to or removed from the A/C. display the difference between the compass headings and actual magnetic headings.A piston engine fuel/ air mixture ratio, ideally, should be in the region of: 1:9 by volume. 1 :7 by weight. 1 :12 by weight.The valve that allows oil to by-pass a blocked engine oil cooler is: temperature activated. manually activated. pressure activated.Two 12 volt 40 ampere-hour capacity batteries connected in series would result in a total capacity of: 80 ampere-hours at 12 volts. 20 ampere-hours at 24 volts. 40 ampere-hours at 24 volts.A flying control surface that is aerodynamically balanced: uses a balance weight forward of the hinge line. has an area of the control surface forward of the hinge line. has been modified with a rim tab.Tyre Creep may be monitored by: stretch marks on the tyre wall and possible tyre deflation. alignment marks painted on and across the tyre wall and wheel flange two diametrically opposed yellow arrows painted on the tyre side wallA flying Control lock: locks controls in flight to neutralise aerodynamic loads and ease the physical load on the pilot. locks controls on the ground! to prevent damage in windy conditions. locks the trim tabs once straight and level cruise is established.If air is maintained at a constant temperature and volume while its pressure is decreased, its density will: remain constant because the volume is constant. increase. decrease.A propeller blade that is twisted along its length: reduces drag at the propeller tips, thereby reducing torque ensures an optimum angle of attack throughout the blade length. prevents aerodynamic interference with the engine cowling.Spark plugs receive their high tension supply from: the alternator. a magneto, independent of the A/C electrical system. a magneto supplied from the A/C electrical system.The operation of a mechanically steered nose wheel is normally accomplished by: cables connected to the aileron control wheel. the use of differential braking technique. push-pull control rods and/or cables operated by the rudder pedals.As an aeroplane's True Air Speed (TAS) increases: Induced drag decreases and parasite drag increases. Parasite drag decreases and induced drag increases. Induced drag increases and parasite drag increases.you can go back for a final check or press SUBMIT to validate. Name (if you want to download a certificate) Related