DGCA Piston Engine 9. Icing ResultsQ1. Carburettor heating is generally not used with take-off and climb-power settings, because of the: Impossibility of engine supplying enough heat Loss of power and possible detonation Increased drag Fire hazard involved Q2. If the manifold pressure gauge of a piston engine shows an increase shortly after carburettor heater is turned on, it indicates: Ice was forming in carburettor Excessive heat is being used Mixture was too lean Overheating of cylinder walls Q3. When applying precautionary carburettor heating on a reciprocating engine with a fixed pitch propeller: The mixture becomes leaner The RPM decreases The mixture does not change The RPM increases Q4. When applying precautionary carburettor heating on a reciprocating engine with a fixed pitch propeller: The mixture does not change The mixture becomes leaner The mixture becomes richer The RPM increases Q5. When applying precautionary carburettor heating on a reciprocating engine with a constant speed propeller: The RPM remains constant The RPM increases The RPM decreases The mixture becomes leaner Q6. When applying precautionary carburettor heating on a reciprocating engine with a constant speed propeller: The RPM increases The RPM decreases The mixture becomes richer The mixture becomes leaner Q7. Which statement is true concerning the effect of the application of carburettor heat? it reduces the volume of air entering the carburettor, thus leaning the fuel/air mixture it reduces the density of air entering the carburettor, thus leaning the fuel/air mixture it reduces the volume of air entering the carburettor, thus enriching the fuel/air mixture it reduces the density of air entering the carburettor, thus enriching the fuel/air mixture Q8. Which of these statements is correct regarding piston engine induction system icing? Ice on the throttle valve is usually formed in the induction system of fuel injection systems. Ice accretion affects both fuel systems and engines equipped with carburettors. Fuel ice is normally formed in the induction system of fuel injection systems. Induction system icing affects only engines equipped with carburettors. Q9. The first indication of carburettor icing, in aeroplanes equipped with constant speed propellers, during cruise would most likely be a: rough running engine followed by loss in rpm rough running engine followed by an increase in manifold pressure decrease in manifold pressure decrease in rpm Q10. With respect to a piston engine aircraft, ice in the carburettor: may form at OAT's higher than +10°C will only form at outside air temperatures (OAT's) below the freezing point of water will only form at OAT's below +10°C will only form at OAT's below the freezing point of fuel Previous Submit The Test← Previous QuizNext Quiz →