Aircraft Systems

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.

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.

To establish 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.

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

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

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

Which statment 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.

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

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

Detonation may occur at high-power setting when. the fuel mixture ignites instantaneously insted of burning progressively and evenly. N/A.

In aicraft equipped with constant-speed propeller and normally aspirated engines, which procedure should be used to avoid placing undue stress on the engine componenets? When power is being. increased, increase the RPM before increasing the manifold pressure. N/A.

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

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

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

Fouling of spark plugs is more apt to occur if the aircraft. gains altitude with no mixture adjusment. 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 normaly happen. Indicated a magneto not grounding in OFF position. N/A.

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

For internal cooling, reciprocatinmg aircraft engine are specially dependent on. the circulatin of lubicating oil. N/A.

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

Unless adjustment, 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.

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

What will occur if no leaning is made with the mixture control as the flight altitude increasing?. the density of air entering the carburetor deacreses and the amount of fuel remains constant. N/A.

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

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

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

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

During preflight in cold weather, crankcase breather lines should receive special attention because they are susceptible to being clogged by. ice from cranckcase vapors that have condensed and subsequently frozen. N/A.

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

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

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

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

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

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