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Commercial pilot FAA Engines
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Commercial pilot FAA Engines Descripción: Commercial Pilot Autor:
Fecha de Creación: 30/05/2023 Categoría: Otros Número Preguntas: 53 |
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Your aircraft has a magneto - spark ignition system. If you turn the ignition switch OFF and the engine continues ti run , this A) is abnormal and shold not happen B) is normal because the mixture has not been cut off C) does not indicate anything is wrong . Leaving the carburetor heat on during takeoff A) will increase the ground roll B) leans the mixture for more mixture for more power on takeoff C) will decrease the takeoff distance . A way to detect a broken magneto primary grounding lead is to A) idle the engine and momentarily turn the ignition off B) add full power , while holding the brakes , and momentarily turn off the ignition C) run one magneto , lean the mixture , and look for a rise in manifold pressure . Fouling of spark plugs is more apt to occur if the aircraft A) climbing into less dense air without adjustment of mixture setting B) descending into more dense air without adjustment of mixture settings C) abruptly closing or opening the throttle . The most probable reason an engine continues to run after the ignition switch has been turned off is A) a broken magneto ground wire B) a magneto ground wire is in contact with the engine casing C) carbon deposits glowing on the spark plugs . If the ground wire between the magneto and the ignition switch becomes disconnected , in a spark ignition system , the engine A) will not operate on one magneto B) can be started accidently C) cannot be started . For internal cooling , reciprocating aircraft engines are especially dependent on A) a properly functioning cowl flap augmenter B) the circulation of lubricating oil C) the proper freon-compressor output ratio . The pilot controls the air -fuel ratio with the A) mixture control B) throttle C) manifold pressure . Wich statement best describes the operating principle of a constant - speed propeller A) A high blade angle , or increased pitch , reduces the propeller drag and allows more engine power for takeoffs B) As throttle setting is changed by the pilot , the prop governor causes pitch angle of the propeller blades to remain unchanged C) The proppler control regulates the engine RPM , and in turn , the propeller RPM. In aircraft equipped with constant - speed propellers and normally-aspirated engines , wich procidure should be used to avoid placing undue stress on the engine components when reducing power ? A) Reduce propeller RPM prior to reducing pressure B) Reduce manifold pressure before reducing propeller RPM C) increase the manifold pressure before reducing propeller RPM . With regard to reciprocating engines , detonation may occur at high - power setting when A) the fuel mixture ignites instantaneously instead of burning progressively and evenly B) an excessively rich fuel mixture causes and explosive gain in power C) the fuel mixture is ignited too early by hot carbon deposits in the cylinder . Detonation can be caused by A) using a lower grade of fuel than recommended B) low engine temperatures C) a rich mixture . The uncontrolled firing of the fuel -air charge in advance of normal spark ignition is know as A) preignition B) instantaneous combution C) detonation . Fuel - air ratio between the A) volume of the fuel and volume of air entering the cylinder B) weight of fuel and weight of air entering the carburator C) weight of fuel and weight of air entering the cylinder . In a normally aspired aircraft engine , proper adjusment of the mixture control is required to A) decrease fuel flow wich compensates for decreased air density at higher altitudes B) prevent the fuel -air combination from becoming lean as the airplane climbs C) regulate the air flow through the carburator reducing carbon deposits . Wich statement is true concerning the effect of the application of carburator heat ? A) it enriches the fuel-air mixture B) it has not effect on the fuel-air mixture C) IT leans the fuel-air mixture . With regard to reciprocating engines , detonation occurs in a reciprocating aircraft engine when A) there is an explosive increase of fuel caused by too rich a fuel-air mixture B) the unburned fuel-air charge in the cylinders is subjected to instantaneous combustion C) the spark plugs receive an electrical jolt caused by a short in the wiring . Propeller efficiency is the A) ratio of thrust horsepower to brake horsepower B) retio of geometric pitch to effective pitch C) actual distance a propeller advances in one revolution . A fixed pitch propeller is designed for best efficiency only at a given combination of A) airspeed and altitude B) airspeed and RPM C) altitude and RPM . The main reason for the variations in geometric pitch along a propeller blade is A) prevent stalling at the propeller hub B) produce uniform angle of atack along the leng of the propeller C) increase the angle of incidence at the hub of the propeller . A detuning of engine crankshaft counterweights is a sourse of overstress that may be caused by A) carburetor ice forming on the throttle valve B) rapid opening and closing of the throttle C) operating with and excessively rich fuel-air mixture . the best power mixture is that fuel-air ratio at wich A) a given power can be obteined with the highest manifold or throttle setting B) the most power can be obteined for any given throttle setting C) cylinder head temperatures are the coolest . What effect if any would a change in ambient temperature or air density have on gas turbine engine performance ? A) As air density decreases , thrust increase B) As temperature increases , Thrust decreases C) as temperature increases , thrust increases . Applying carburetor heat will A) not affect mixture B) lean the fuel-air mixture C) enrich the fuel-air mixture . High oil temperature that exceeds operating limits could indicate A) excessive oil quantity B) low oil quantity C) improper fuel-air mixture . what will occur if no leaning is made with the mixture control as the flight altitude increases A) the volume of air entering the carburetor decreases and the amount offuel decreases B) the density of air entering the carburetor decreases and the amount of fuel increases C) the density of air entering the carburator decreases and the amount of fuel remains constant. Unless adjusted , the fuel-air mixtures becomes richer with an increase in altitude because the amount of fuel A) remains constant while the density of air decreases B) Decreases while the volume of air decreases C) remains constant while the volume of air decreases . If 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 A) ab excessive fuel flow that fails to compensate for decreased air density B) a decrease in the amount of fuel that compensates for an increase in air density C) a decrease in fuel flow that fails to compensate for a decrease in air density . At high altitudes , an excessively rich mixture cause the A) Engine to operate smoother even though fuel consumption is increased B) fouling of a spark plugs C) engine to overheat . Frequent inspections should be made of aircraft exhaust manifold - type heating systems to minimize the possibility of A) a power loss due to back pressure in the exhaust system B) a cold- running engine due to the heat withdraw by the heater C) exhaust gases leaking into the cockpit . The stablish 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 A) increasing RPM by decreasing propeller blade angle B) decreasing RPM by increasing propeller blade angle C) decreasing RPM by decreasing propeller blade angle . To develop maximun and thrust , a constant - speed propeller should be set to a blade angle that will produce a A) small angle of attack and high RPM B) large angle of attack and high RPM C) large angle of attack and low RPM . For takeoff , the blade angle of a controllable-pitch ptopeller should be set at a A) large angle of attack and high RPM B) large angle of attack and low RPM C) small angle of attack and high RPM . During prefligh in cold weather , crankcase breather lines should receive special attention because they are susceptible to being clogged by A) moisture from the outside air wich has frozen B) ice from crankcase vapors that have condensed and subsequently frozen C) congealed oil from the crankcase . In an aircraft with a constant speed propeller , a decrease in the manifold pressure will A) cause the governor to keep the propeller at the same pitch to maintain constant engine and propeller RPM B) cause the governor to increase the propeller pitch to maintain engine and propeller RPM C) cause the governor to decrease the propeller pitch to maintain engine and propeller RPM . If a pilot notices a cilynder head temperature rising above normal limits , what are some of the methods to lower the temperature to normal operating limits ? A) increase airspeed , enrich fuel-air mixture and -or reduce engine speed B) increase airspeed , lean fuel-air mixture , and-or reduce engine speed C) Reduce airspeed , lean fuel-air mixture , and-or reduce engine speed . Continuously exceeding manufacturers limitations on maximum manifold pressure MAP may result in damage to A) the cilynder components - possible engine failure B) the primary propeller governor - propeller overspeed C) the constant speed propeller - propeller failure . A reciprocating engine , extremely high temperature will result in A) increased power B) detonation C) less oil consumption. Spark plug fouling in a normally airspeed aircraft engine may be the result of A) excessive carbon buildup B) a mixture that is too lean C) throttle advancement that is abrupt . Detonation is likely to occur when A) there is a problem with the electrical system B) the fuel-air mixture is excessively rich C) the mixture is excessively lean . Preignition in a reciprocating engine causes the engine to A) run cooler that normal B) lose power C) advance ignition timing . What will accur if no enrichment is made with the mixture control as the flight altitude decreases ? A) Th volume of air entering the carburetor increases and the amount of fuel increases B) the density of air entering the carburetor decreases and the amount of fuel decreases C) the density of air entering the carburetor increases and the amount of fuel remain constant . If you were to takeoff and climb to cruise flight and notice that the carburetor heat was left in the ON position A) the engine would create less power B) the engine would create more power C) it would case the mixture to be leaner than normal . When cruising enroute to your destination , you notice your oil temperature is reading high and oil pressure is low . What could be the problem ? A) oil temperature is directly affected by OAT B) oil is below minimum oil needed C) there is excess oil the engine . When happens when a pilot operates the manifold pressure lever on an aircraft equipped with a constant - speed propeller A) When the pilot increases throttle , the governor keeps the propeller pitch fixed to maintain constant RPM B) When the pilot decrease throttle , the governor increases propeller pitch to maintain constant RPM C) When the pilot increases throttle , the governor increases propeller pitch to maintain constant RPM . A pilot turns on the carburetor heat in the aircraft . The pilot expects less performance from the engine because A) the air is now more dense B) the mixture has been enriched C) the mixture has been enriched . An excessively rich mixture will cause the engine to run rough.This is due to excess fuel A) leading to detonation andcausing engine roughness B) not being burned completely and fouling the spark plugs C) lowering the temperature of the carburetor and causing carburetor icing . The main reason for the variations in geometric pitch (twisting) along a propeller blade is to A) prevent stalling near the propeller hub in cruise flight B) produce uniform lift along the length of the propeller blade C) permit a relatively constant angle of incidence along its length . What is the best climb airspeed to provide for better engine cooling? A) Vx B) Vy C) cruise climb . When you starta engine , andthe oil pressure has not reached the lower acceptable limit in 30 seconds , you should A) wait up to an additional 30 seconds B) look at the oil temperature gauge for acceptable indications C) shut down the engine . a flight condition where air is unable to enter the fuel tank thru the vent will cause A) detonation B) vaporization C) fuel starvation. What would you see when you turn the magneto switch to LEFT or RIGHT from BOTH A) large decrease in RPM B) no change in RPM C) small decrese in RPM . Why is practicing extended emergency descents not recommended ? A) The engine could be excessively B) The engine would be allowed to get hot C) The engine could exceed maximum RPM . |
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