Aircraft Systems

The most probable reason an engine continues to run after the ignition switch has been turned off is. a broken magneto ground wire. N/A. N/A.

The best power mixture is that air-fuel ratio at which. the most power can be obtained for any given throttle setting. N/A. N/A.

Applying carburetor heat will. enrich the air-fuel mixture. N/A. N/A.

A detuning of engine crankshaft counterweights is a source of overstress that may be caused by. rapid opening and closing of the throttle. N/A. N/A.

For takeoff, the blade of a controllable-pitch propeller should be set at a. small angle of attack and high RPM. N/A. N/A.

At high altitudes, an excessively rich mixture will cause the. fouling of spark plugs. N/A. N/A.

Leaving the carburetor heat on while taking off. will increase the ground roll. N/A. N/A.

Fouling of spark plugs is more apt to occur if the aircraft. gains altitude with no mixture adjustment. N/A. N/A.

During 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. N/A. N/A.

The uncontrolled firing of the air-fuel charge in advance of normal spark ignition is known as. pre-ignition. N/A. N/A.

Air-fuel ratio is the ratio between the. weight of air and weight of fuel entering the cylinder. N/A. N/A.

Which statement is true concerning the effect of the application of carburetor heat?. It enriches the air-fuel mixture. N/A. N/A.

The reason for variations in geometric pitch (twisting) along a propeller blade is that it. permits a relatively constant angle of attack along its length when in cruising flight. N/A. N/A.

A way to detect a broken magneto primary grounding lead is to. idle the engine and momentarily turn the ignition off. N/A. N/A.

What 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. N/A. N/A.

A fixed-pitch propeller is designed for best efficiency only at a given combination of. airspeed and RPM. N/A. N/A.

What should be expected when making a downwind landing? The likelihood of. overshooting the intended landing spot and a faster grounspeed at touchdown. N/A. N/A.

Which is true regarding preheating an aircraft during cold weather operations?. The cabin area as well as the engine should be preheated. N/A. N/A.

If the ground wire between the magneto and the ignition switch becomes disconnected, the engine. could accidentally start if the propeller is moved with fuel in the cylinder. N/A. N/A.

In 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 power is being. increased, increase the RPM before increasing the manifold pressure. N/A. N/A.

The mixture control can be adjusted, which. prevents the air-fuel combination from becoming too rich at higher altitudes. N/A. N/A.

For internal cooling, reciprocating aircraft engines are especially dependent on. the circulation of lubricating oil. N/A. N/A.

The pilot controls the air-fuel ratio with the. mixture control. N/A. N/A.

Unless adjusted, the air-fuel mixture becomes richer with an increase in altitude because the amount of fuel. remains constant while the density of air decreases. N/A. N/A.

Which statement best describes the operating principle of a constant-speed propeller?. The propeller control regulates the engine RPM and in turn the propeller RPM. N/A. N/A.

Before shutdown, while at idle, the ignition key is momentarily turned OFF. The engine continues to run with no interruption; this. should not normally happen. Indicates a magneto not grounding in OFF position. N/A. N/A.

The basic purpose of adjusting the air-fuel mixture control at altitude is to. decrease the fuel flow to compensate for decreased air density. N/A. N/A.

To 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. N/A. N/A.

To 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. N/A. N/A.

Detonation may occur at high-power settings when. the fuel mixture ignites instantaneously instead of bruning progressively and evenly. N/A. N/A.

An abnormally high engine oil temperature indication may be caused by. the oil level being too low. N/A. N/A.

Detonation occurs in a reciprocating aircraft engine when. the unburned air-fuel charge in the cylinders is subjected to instantaneous combustion. N/A. N/A.

Consider a reciprocating aircraft engine. Detonation can be caused by. using a lower grade of fuel than recommended. N/A. N/A.

Your aircraft has an exhaust manifold type heating system. The exhaust manifold should be periodically inspected to avoid. carbon monoxide poisoning. N/A. N/A.

Propeller efficiency is the. ratio of thrust horsepower to brak horsepower. N/A. N/A.