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ERASED TEST, YOU MAY BE INTERESTED ONFAA AMT POWERPLANT QUESTIONS 09

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Title of test:
FAA AMT POWERPLANT QUESTIONS 09

Description:
faa study guide

Author:
fabio santos
(Other tests from this author)

Creation Date:
03/04/2017

Category:
Others

Number of questions: 40
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Content:
A safety feature usually employed in pneumatic starters that is used if the clutch does not release from the engine drive at the proper time during start is the: drive shaft shear point flyweight cutout switch spring coupling release.
An oil separator is generally associated with which of the following? engine driven vaccum pump engine driven oil pressure pump cuno oil filter.
The time/current capacities of a circuit breaker or fuse must be: above those of the associated conductor equal to those of the associated conductor below those of the associated conductor.
On small aircraft engines, fuel vaporization may be increased by: heating the fuel before it enters the carburetor circulating the fuel and air mixture through passages in the oil sump cooling the air before it enters the engine.
The purpose of the back suction mixture control in a float type carburetor is to adjust the mixture by: regulating the pressure drop at the venturi regulating the suction on the mixture from behind the throttle valve regulating the pressure on the fuel in the float chamber.
The fan rotational speed of a dual axial compressor forward fan engine is the same as the: low pressure compressor high pressure compressor forward turbine wheel.
In the event a pneumatic start valve will not operate and the manual override must be used, the starter T handle must be closed at scheduled starter drop out because: the starter oil will be blown over board the starter will overheat the starter will overspeed at a given N2.
Which of the following best describes the blade movement of a propeller that is in the high RPM position when reversing action is begun? low pitch through high pitch to reverse pitch low pitch through feather position to reverse pitch low pitch directly to reverse pitch.
What is the primary purpose of the tachometer on an axial compressor turbine engine? it is the most accurate instrument for establishing thrust settings under all conditions monitor engine RPM during starting and to indicate overspeed conditions monitor engine RPM during cruise conditions.
Which statement is true regarding the air passing through the combustion section of a jet engine? most is used to support combustion a small percentage is frequently bled off at this point to be used for air-conditioning and/or other pneumatic powered systems most is used for engine cooling.
In a low tension ignition system, each spark plug requires an individual: secondary coil breaker assembly capacitor.
Where are the high and low pitch stops of a Hamilton Standard constant speed or two position counterweight propeller located? in the hub and blade assembly in the dome assembly in the counterweight assembly.
Which of the following is NOT used to detect fires in reciprocating engine nacelles? flame detectors rate of temperature rise detectors smoke detectors.
What is the primary purpose of the metal tipping which covers the blade tips and extends along the leading edge of each wood propeller blade? to increase the longitudinal strength of the blade to increase the lateral strength of the blade to prevent impact damage to the tip and leading edge of the blade.
As manifold pressure increases in a reciprocating engine, the: volume of air in the cylinder increases density of air in the cylinder increases weight of the fuel/air charge decreases.
The action of a carburetor airscoop is to supply air to the carburetor, but it may also: cool the engine increase the pressure of the incoming air by ram effect keep fuel lines cool and prevent vapor lock.
During inspection, turbine engine components exposed to high temperatures may only be marked with such materials as allowed by the manufacturer. These materials generally include: 1. layout dye 2. commercial felt tip marker 3. wax or grease pencil 4. chalk 5. graphite lead pencil 1, 2, and 4 2, 4, and 5 1, 3, and4.
The compressor stators in a gas turbine engine act as diffusers to: increase the velocity and decrese the pressure of the gas increase the velocity of the gas flow decrease the velocity of the gas flow.
A high surge of current is required when a dc electric motor is first started. As the speed of the motor increases, the counter emf builds up and opposes the applied emf, thus reducing the current flow through the armature. the counter emf decreases proportionally. the applied emf increases proportionally.
What is the source of most of the heat that is absorbed by the lubricating oil in a reciprocating engine? Pistons and cylinder walls. Exhaust valves. Crankshaft main bearings.
A fuel strainer or filter must be located between the: tank outlet and the fuel metering device. boost pump and tank outlet. boost pump and engine driven fuel pump.
On a float type carburetor, the purpose of the economizer valve is to: provide extra fuel for sudden acceleration of the engine. provide a richer mixture and cooling at maximum power output. maintain the leanest mixture possible during cruising best power.
Grinding the valves of a reciprocating engine to a feather edge is likely to result in: preignition and burned valves. excessive valve clearance. normal operation and long life.
Which of the following are distinct circuits of a high tension magneto? 1. Magnetic. 2. Primary. 3. E gap. 4. P lead. 5. Secondary. 2, 4, 5. 1, 2, 5. 1, 3, 4.
Which statement is correct regarding a continuous flow fuel injection system used on many reciprocating engines? Fuel is injected directly into each cylinder. Fuel is injected at each cylinder intake port. Two injector nozzles are used in the injector fuel system for various speeds.
Spark plug fouling caused by lead deposits occurs most often: when cylinder head temperatures are high. during cruise with rich mixture. when cylinder head temperatures are relatively low.
What is the function of a fire detection system? To activate a warning device in the event of a powerplant fire. To identify the location of a powerplant fire. To discharge the powerplant fire extinguishing system at the origin of the fire.
Ignition check during engine runup indicates a slow drop in RPM. This is usually caused by: defective spark plugs. incorrect ignition timing or valve adjustment. a defective high tension lead.
The highest heat to metal contact in a jet engine is the: burner cans. turbine inlet guide vanes. turbine blades.
In turbine engines that utilize a pressurization and dump valve, the dump portion of the valve: dumps extra fuel into the engine in order to provide for quick engine acceleration during rapid throttle advancement drains the engine manifold lines to prevent fuel boiling and subsequent deposits in the lines as a result of residual engine heat (at engine shutdown). cuts off fuel flow to the engine fuel manifold and dumps the manifold fuel into the combustor to burn just before the engine shuts down.
Surface treatment to counter the effects of dye-penetrant inspection on a propeller is accomplished by: rinse the blade in alodine solution wiping with alcohol washing off with solvent.
Which statements are true regarding aircraft engine propulsion? 1. an engine driven propeller imparts a relatively small amount of acceleration to a large mass of air. 2. turbo jet and turbo fan engines impart a relatively large amount of acceleration to a smaller mass of air. 3. in modern turboprop engines, nearly 50 percent of the exhaust gas energy is extracted by turbines to drive the propeller and compressor with the rest providing exhaust thrust. 1, 2, 3 1, 3 1, 2.
The generating system of an aircraft charges the battery by using: constant voltage and varying current constant voltage and constant current constant current and varying voltage.
The time in seconds required for exactly 60 cubic centimeters of oil to flow through an accurately calibrated orifice at a specific temperature is recorded as a measurement of the oil´s: flash point viscosity specific gravity.
A weak fuel to air mixture along with normal airflow through a turbine engine may result in: a lean die-out a rich flameout high EGT.
Low oil pressure can be detrimental to the internal engine components. However, high oil pressure: has a negligible effect will not occur because of pressure losses around the bearings should be limited to the engine manufacturer's recommendations.
Some aircraft engine manufacturers equip their product with choked or taper-ground cylinders in order to: flex the rings slightly during operation and reduce the possibility of the rings sticking in the grooves increase the compression pressure for starting purposes provide a straight cylinder bore at operating temperatures.
During ground operation of an engine, the cowl flaps should be in what position? fully open opened according to ambient conditions fully closed.
Which of the following lubrication system components is never located between the pressure pump and the engine pressure system? fuel line for oil dilution system oil temperature bulb check valve.
(1) Wet sump oil systems are most commonly used in gas turbine engines. (2) In most turbine engine oil tanks, a slight pressurization of the tank is desired to ensure a positive flow of oil. Regarding the above statements, both no.1 and no.2 are true neither no.1 nor no.2 is true only no.2 is true.
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