1Your aircraft has a magneto/spark ignition system - If you turn the ignition switch to 'OFF' and the engine continues to run, this
Is abnormal and should not happen.
2Leaving the carburetor heat on during the takeoff
Will increase the ground roll.
3A way to detect a broken magneto primary grounding lead is to
Idle the engine and momentarily turn the ignition off.
4Fouling sparks is more apt to occur if the aircraft
Climbing into less dense air without adjustments of mixture setting.
5The most probable reason an engine continues to run after the ignition switch has been turn off is
A broken magneto ground wire.
6If the ground wire between the magneto and the ignition switch becomes disconnected, in a spark ignition system, the engine
Can be started accidentally.
7For internal cooling, reciprocating aircraft engines are specially dependent on
The circulation of lubricating oil.
8The pilot controls the air/fuel ratio with the
Mixture control.
9Whichs statement best describes the operating principle of a constant-speed propeller
The propeller control regulates the engine RPM, and in turn, the propeller RPM.
10In aircraft equipped with constant-speed propellers and normally-aspirated engines, which procedure should be used to avoid placing undue stress on the engine components when reducing power
Reduce manifold pressure before reducing propeller RPM.
11With regard to reciprocating engines, detonation may occur at high-power settings when
The fuel mixture ignites instantaneously instead of burning progressively and evenly.
12Detonation can be caused by
Using a lower grade of fuel than recommended.
13The uncontrolled firing of the fuel/air charge in advance of normal spark ignition is known as
Preignition.
14Fuel/air ratio is the ratio between the
Weight of the fuel and weight of air entering the cylinder.
15In a normally aspirated aircraft engine, proper adjustment of the mixture control is required to
Decrease fuel flow which compensates for decreased air density at higher altitudes.
16Which statement is true concerning the effect of the application of carburetor heat
It enriches the fuel/air mixtures.
17With regard to reciprocating engines, detonation occurs in a reciprocating aircraft engine when
The unburned fuel/air charge in the cylinders is subjected to instantaneous combustion.
18Propeller efficiency is the
Ratio of thrust horsepower to brake horsepower.
19A fixed-pitch propeller is designed for best efficiency only at a given combination of
Airspeed and RPM.
20The main reason for the variation in geometric pitch (twisting) along a propeller blade is to
Produce uniform angle of attack along the length of the propeller.
21A detuning of engine crankshaft counterweights is a source of overstress that may be caused by
Rapid opening and closing of the throttle.
22The best power mixture is that fuel/air ratio at which
The most power can be obtained for any given throttle setting.
23What effect, if any, would a change in ambient temperature or air density have on gas turbine engine performance
As temperature increases, thrust decreases.
24Applying carburetor heat will
Enrich the fuel/air mixture.
25High oil temperature that exceeds normal operating limits could indicate
Low oil quantity
26What will occur if no leaning is made with the mixture control as the flight altitude increases
The density of air entering the carburetor decreases, and the amount of fuel remains constant.
27Unless adjusted, the fuel/air mixture becomes richer with an increase in altitude because the amount of fuel
Remains constant while the density of air decreases.
28If you fail to adjust to the proper fuel-air mixture in an aircraft powered by a normally aspirated engine, after climb to a higher altitude, the result is
An excessive fuel flow that fails to compensate for decreased air density.
29At high altitudes an excessively rich mixture will cause the
Fouling of spark plugs.
30Frequent inspections should be made of aircraft exhaust manifold-type heating systems to minimize the possibility of
Exhaust gases leaking into the cockpit.
31To establish a climb, after takeoff, in an aircraft equipped with a constant-speed propeller, the output of the engine is reduced to climb power by decreasing manifold pressure and
Decreasing RPM by increasing propeller blade angle.
32To develop maximum power and thrust, a constant-speed propeller should be set to a blade angle that will produce a
Small angle of attack and high RPM.
33For takeoff, the blade angle of a controllable-pitch propeller should be set at a
Small angle of attack and high RPM.
34During preflight in cold weather, crankcase breather lines should receive special attention because they are susceptible to being clogged by
Ice from crankcase vapors that have condensed and subsequently frozen.
35In an aircraft with a constant speed propeller, a decrease in the manifold pressure will
Cause the governor to decrease the propeller pitch to maintain engine and propeller RPM.
36If a pilot notices a cylinder head temperature rising above normal limits, what are some of the methods to lower the temperature to normal operating limits
Increase airspeed, enrich fuel/air mixture, and/or reduce engine speed.
37Continuously exceeding the manufacturer's limitations on maximum manifold pressure (MAP) may result in damage to
The cylinder components / possible engine failure.
38In a reciprocating engine, extremely high temperature will result in
Detonation.
39Spark plug fouling in a normally aspirated aircraft engine may be the result of
Excessive carbon buildup.
40Detonation is likely to occur when
The mixture is excessively lean.
41Preignition in a reciprocating engine causes the engine to
Lose power.
42What will occur if no enrichment is made with the mixture control as the flight altitude decreases
The density of air entering the carburetor increases and the amount of fuel remains constant.
43If you were takeoff and climb to cruise flight and notice that the carburetor heat was left in the ON position
The engine would create less power.
44When cruising enroute to your destination, you notice your oil temperature is reading high and oil pressure is low - What could be the problem
Oil is below minimum oil needed.
45What happens when a pilot operates the manifold pressure lever on an aircraft equipped with a constant-speed propeller
When the pilot increases throttle, the governor increase propeller pitch to maintain constant RPM.
46A pilot turns on the carburetor heat in the aircraft. The pilot expects less performance from the engine because
The mixture has been enriched.
47An excessively rich mixture will cause the engine to run rough - this is due to excess fuel
Not being burned completely and fouling the spark plugs.
48The main reason for the variation in geometric pitch (twisting) along the propeller blade is to
Produce uniform lift along the length of the propeller blade.