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ERASED TEST, YOU MAY BE INTERESTED ONFAA AMT POWERPLANT QUESTIONS 10

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Title of test:
FAA AMT POWERPLANT QUESTIONS 10

Description:
faa study guide

Author:
fabio santos
(Other tests from this author)

Creation Date:
06/04/2017

Category:
Others

Number of questions: 40
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Content:
What are the two functional elements in a centrifugal compressor? Bucket and expander. Impeller and diffuser. Turbine and compressor.
A certain direct current series motor mounted within an aircraft draws more amperes during start than when it is running under its rated load. The most logical conclusion that may be drawn is: the condition is normal for this type of motor. the starting winding is shorted. the brushes are floating at operating RPM because of weak brush springs.
What will be the likely result if the piston ring gaps happen to be aligned when performing a differential pressure compression check on a cylinder? The rings will not be seated. Little or no effect. A worn or defective ring(s) indication.
The fuel flow indication system used with many fuel-injected opposed engine airplanes utilizes a measure of: fuel pressure. fuel flow volume. fuel flow mass.
Where is the oil of a dry sump reciprocating engine exposed to the temperature control valve sensing unit? Oil cooler inlet. Engine inlet. Engine outlet.
On an aircraft that utilizes an exhaust heat exchanger as a source of cabin heat, how should the exhaust system be inspected? X rayed to detect any cracks. With the heater air shroud removed. Hydrostatically tested.
The stator vanes in an axial flow compressor: convert pressure energy into velocity energy. convert velocity energy into pressure energy. direct air into the first stage rotor vanes at the proper angle.
What will happen to the return oil if the oil line between the scavenger pump and the oil cooler separates? The scavenger return line check valve will close and force the oil to bypass directly to the intake side of the pressure pump. Oil will accumulate in the engine. The return oil will be pumped overboard.
A nine cylinder radial engine, using a multiple point priming system with a central spider, will prime which cylinders? all cylinders 1, 3, 5, and 7 1, 2, 3, 8, and 9.
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 counter emf increases proportionally.
What test instrument could be used to test an ignition harness for suspected leakage? a high amperage dc ammeter a high tension lead tester a high voltage dc voltmeter .
Which of the following can cause fan blade shingling in a turbofan engine? 1. engine overspeed 2. engine overtemperature 3. large, rapid throttle movements 4. FOD 1, 2 1, 4 1, 2, 3, 4.
Which of the following statements regarding volumetric efficiency of an engine is true? it is possible to exceed 100 percent volumetric efficiency of some engines by the use of superchargers of the proper type it is impossible to exceed 100 percent volumetric efficiency of any engine regadless of the type of supercharger used the volumetric efficiency of an engine will remain the same regardless of the amount of throttle opening.
Which statement is correct concerning a thermocouple type temperature indicating instrument system? it is a balanced type, variable resistor circuit it usually contains a balancing circuit in the instrument case to prevent fluctuations of the system voltage from affecting the temperature reading it requires no external power source.
Which of the following indicates that a combustion chamber of a jet engine is not operating properly? warping of the exhaust duct liner clam shells stick in thrust reverse position hot spots on the tail cone.
At what speed must a crankshaft turn if each cylinder of a four stroke cycle engine is to be fired 200 times a minute? 800 RPM 400 RPM 1,600 RPM.
In a dual axial flow compressor, the first stage turbine drives: N1 compressor low pressure compressor N2 compressor.
What are the two types of ac motors that are used to produce a relatively high torque? shunt field and single phase shaded pole and shunt field three phase induction and capacitor start.
If an engine is equipped with a float type carburetor and the engine runs excessively rich at full throttle, a possible cause of the trouble is a clogged: main air bleed back suction line atmospheric vent line.
Which of the following functions requires the use of a propeller blade station? indexing blades propeller balancing measuring blade angle.
Which statement is correct regarding a four stroke cycle aircraft engine? the intake valve closes on the compression stroke the exhaust valve opens on the exhaust stroke the intake valve closes on the intake stroke.
Excessively rich or lean idle mixtures result in: incomplete combustion too rapid completion of combustion incomplete cylinder scavenging.
What is the primary purpose of the hopper located in the oil supply tank of some dry sump engine installations? to reduce the time required to warm the oil to operating temperatures to reduce surface aeration of the hot oil and thus reduce oxidation and the formation of sludge and varnish to impart a centrifugal motion to the oil entering the tank so that the foreign particles in the oil will separate more readily.
Increased engine heat will cause volumetric efficiency to: increase remain the same decrease.
A major difference between the Teledyne-Continental and RSA (precision airmotive or bendix) continuous flow fuel injection systems in fuel metering is that the: continental system uses fuel pressure only as a metering force continental system utilizes airflow as a metering force RSA system uses air pressure only as a metering force.
If the intake valve is opened too early in the cycle of opoeration of a four-stroke cycle engine, it may result in: engine kickback backfiring into the induction system improper scavenging of exhaust gases.
Generally, unless otherwise specified by the manufacturer, repairs of nicks, scratches, gouges, etc. on aluminum propeller blades must be made: perpendicular to the blade axis so as to return the damaged area to the original dimensions parallel to the length of the blade.
Which of the following is identified as the cambered or curved side of a propeller blade, corresponding to the upper surface of a wing airfoil section? blade back blade face blade chord.
Fuel discharged for idling speeds on a float type carburetor: in the venturi through the idle discharge air bleed from the idle discharge nozzle.
All of the following are recommended markers for reciprocating engine exhaust systems except: prussian blue lead pencil india ink.
Possible failure related ferrous metal particles in turbine engines oil cause an (electrical) indicating type magnetic chip detector to indicate their presence by: bridging the gap between the detector center (positive) electrode and the ground electrode disturbing the magnetic lines of flux around the detector tip generating a small electric current that is caused by the particles being in contact with the dissimilar metal of the detector tip.
A continuous loop fire detector is what type of detector? spot detector rate of temperature rise detector overheat detector.
What term is used to describe a permanent and cumulative deformation of the turbine blades of a turbojet engine? stretch distortion creep.
Cylinder head temperatures are measured by means of an indicator and a: resistance bulb sensing device wheatstone bridge sensing device thermocouple sensing device.
Excessive valve clearances will cause the duration of valve opening to: increase for both intake and exhaust valves decrease for both intake and exhaust valves decrease for intake valves and increase for exhaust valves .
What is the primary factor which controls the pressure ratio of an axial flow compressor? compressor inlet temperature number of stages in compressor compressor inlet pressure.
The vent line connecting the oil supply tank and the engine in some dry sump engine installations permits: the oil tank to be vented through the normal engine vent oil vapors from the engine to be condensed and drained into the oil supply tank pressurization of the oil supply to prevent cavitation of the oil supply pump.
Which statement is correct regarding the ignition system of a turbine engine? the system generally includes a polar inductor type magneto the system is normally de energized as soon as the engine starts it is energized during the starting and warmup periods only.
The propeller blade angle is defined as the angle between the airfoil section chord line (at the blade reference station) and which of the following? the relative wind the axis of blade rotation during pitch change the plane of rotation.
One of the advantages of inspecting an aluminum propeller utilizing dye-penetrant inspection procedure is that: defects just below the surface are indicated it indicates overspeed condition it shows whether visible lines and other marks are actually cracks rather than scratches.
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