PPL EXAM AIRCRAFT SYSTEMS questions with correct answers

What is a Magneto - Answer Self contained source of electrical energy If the ground wire between the magneto and the ignition switch becomes disconnected, what will occur? - Answer The engine wont be able to shut down via the shut OFF switch What provides more power at low RPM, generator or alternator? - Answer Alternator has more magnetic poles The operating principle of float-type carburetors is based on the - Answer Difference in air pressure at the venturi throat and the air inlet The purpose of adjusting fuel/air mix at altitude is to - Answer Decrease the fuel flow in order to compensate for air density Carb Ice should be considered Between (temps) and relative humidity is - Answer 20F-70F and Relative Humidity is high Carb Heat does what - Answer Heats the air before it enters the carb. What happens to air entering the carb with carb heat - Answer It is less dense What happens to the engine when carb heat is applies - Answer Decreases engine output and increases engine operating temp