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ERASED TEST, YOU MAY BE INTERESTED ONFAA AMT POWERPLANT QUESTIONS 08

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Title of test:
FAA AMT POWERPLANT QUESTIONS 08

Description:
faa study guide

Author:
fabio santos
(Other tests from this author)

Creation Date:
29/03/2017

Category:
Others

Number of questions: 40
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Content:
A powerplant using a hydraulically controlled constant speed propeller is operating within the propeller's constant speed range at a fixed throttle setting. If the tension of the propeller governor control spring (speeder spring) is reduced by movement of the cockpit propeller control, the propeller blade angle will: decrease, engine manifold pressure will decrease, and engine RPM will increase. increase, engine manifold pressure will increase, and engine RPM will decrease. decrease, engine manifold pressure will increase, and engine RPM will decrease. .
The angle of attack of a rotating propeller blade is measured between the blade chord or face and which of the following? Plane of blade rotation. Full low pitch blade angle. Relative airstream.
Upon what quality or characteristic of a lubricating oil is its viscosity index based? Its resistance to flow at a standard temperature as compared to high grade paraffin base oil at the same temperature. Its rate of change in viscosity with temperature change. Its rate of flow through an orifice at a standard temperature.
Select a characteristic of a good weld on exhaust stacks. The weld should be built up 1/8 inch. The weld should taper off smoothly into the base metal. Porousness or projecting globules should show in the weld.
Where should the main fuel strainer be located in the aircraft fuel system? At the lowest point in the fuel system. Downstream from the wobble pump check valve. At any point in the system lower than the carburetor strainer.
A magneto ignition switch is connected: in series with the breaker points. parallel to the breaker points. in series with the primary capacitor and parallel to the breaker points.
The oil used in reciprocating engines has a relatively high viscosity due to: large clearances and high operating temperatures. the relatively high rotational speeds. the reduced ability of thin oils to maintain adequate film strength at altitude (reduced atmospheric pressure).
The compressor stators in a gas turbine engine act as diffusers to: increase the velocity and decrease the pressure of the gas. increase the velocity of the gas flow. decrease the velocity of the gas flow.
Fuel pressure produced by the engine-driven fuel pump is adjusted by the: bypass valve adjusting screw. engine driven fuel pump adjusting screw. relief valve adjusting screw.
Where would one find type design information for an R1830-92 engine certificated under the Civil Air Regulations (CAR) and installed on a DC-3? The Aircraft Engine Type Certificate Handbook. The Aircraft Engine Specifications. The Aircraft Specifications and Type Certificate Data Sheet.
Where are the hot and cold junctions located in an engine cylinder temperature indicating system? The hot junction is located at the cylinder and the cold junction is located at the instrument. Both junctions are located at the instrument. Both junctions are located at the cylinder.
Usually, most of the load placed on an APU occurs when: an electrical load is placed on the generator(s). the bleed air valve is opened. the bleed air valve is closed.
How is the oil pressure delivery on a hydromatic propeller normally stopped after the blades have reached their full feathered position? Pulling out the feathering push button. Stop lugs in the teeth of the rotating cam. Electric cutout pressure switch.
If it is found that a shielded ignition system does not adequately reduce ignition noise, it may be necessary to install: bonding wires from the shielding to ground. a filter between the magneto and magneto switch. a second layer of shielding.
(1) Engine pressure ratio (EPR) is a ratio of the exhaust gas pressure to the engine inlet air pressure, and indicates the thrust produced. (2) Engine pressure ratio (EPR) is a ratio of the exhaust gas pressure to the engine inlet air pressure, and indicates volumetric efficiency. Regarding the above statements, both No. 1 and No. 2 are true. only No. 2 is true. only No. 1 is true.
Fuel pump relief valves designed to compensate for atmospheric pressure variations are known as: balanced type relief valves. pressurized relief valves. compensated flow valves.
What is the purpose of the flow divider in a turbine engine duplex fuel nozzle? Provides a flow path for bleed air which aids in the atomization of fuel. Allows an alternate flow of fuel if the primary flow clogs or is restricted. Creates the primary and secondary fuel supplies.
Which of the following will be caused by excessive valve clearance of a cylinder on a reciprocating aircraft engine? Intake and exhaust valves will open early and close late. A power increase by shortening the exhaust event. Reduced valve overlap period.
Capacitance afterfiring in most modern spark plugs is reduced by the use of: fine wire electrodes. a built in resistor in each plug. aluminum oxide insulation.
Which of the following are included in a typical turbine engine ignition system? 1. Two igniter plugs. 2. Two transformers. 3. One exciter unit. 4. Two intermediate ignition leads. 5. Two low tension igniter leads. 6. Two high tension igniter leads. 1, 4, 5. 2, 3, 4. 1, 3, 6.
If a float type carburetor becomes flooded, the condition is most likely caused by: a leaking needle valve and seat assembly. the accelerating pump shaft being stuck. a clogged back suction line.
What is an advantage of using metallic-sodium filled exhaust valves in aircraft reciprocating engines? Increased strength and resistance to cracking. Greater resistance to deterioration at high valve temperatures. Reduced valve operating temperatures.
Between each row of rotating blades in a turbine engine compressor, there is a row of stationary blades which act to diffuse the air. These stationary blades are called: rotors. stators. buckets.
Maximum taper contact between crankshaft and propeller hub is determined by using: a surface gauge. bearing blue color transfer. a micrometer.
The operating temperature valve clearance of a radial engine as compared to cold valve clearance is: less. the same. greater.
How do cowl flaps aid in cooling a horizontally opposed aircraft engine? Recirculates air through the engine cylinders. Directs air through the engine cylinders. Controls the amount of air flowing around the cylinders.
When the starter switch to the aircraft gas turbine engine starter-generator is energized and the engine fails to rotate, one of the probable causes would be the: power lever switch is defective. undercurrent solenoid contacts are defective. starter solenoid is defective.
What is the approximate position of the rotating magnet in a high tension magneto when the points first close? Full register. A few degrees after neutral. Neutral.
If staggered ignition timing is used, the: spark will be automatically advanced as engine speed increases. spark plug nearest the exhaust valve will fire first. spark plug nearest the intake valve will fire first.
If the hot clearance is used to set the valves when the engine is cold, what will occur during operation of the engine? The valves will open early and close early. The valves will open late and close early. The valves will open early and close late.
Which unit most accurately indicates fuel consumption of a reciprocating engine? fuel pressure gauge fuel flowmeter electronic fuel quantity indicator.
What is a characteristic of a centrifugal type fuel boost pump? it has positive displacement it separates air and vapor from the fuel it requires a relief valve.
The oil dampened main bearing utilized in some turbine engines is used to: dampen surges in oil pressure to the bearings provide lubrication of bearings from the beginning of starting rotation until normal oil pressure is established provide an oil film between the outer race and the bearing housing in order to reduce vibration tendencies in the rotor system, and to allow for slight misalignment.
Where is the highest gas pressure in a turbojet engine? at the outlet of the tailpipe section at the entrance of the turbine section in the entrance of the burner section.
When starting an engine equipped with a carburetor air heater, in what position should the heater be placed? neutral hot cold.
Why is an aircraft reciprocating engine oil tank on a dry sump lubrication system equipped with a vent line? to eliminate foaming in the oil tank to prevent pressure buildup in the oil tank to prevent pressure buildup in the reciprocating engine crankcase.
A bourdon tube instrument may be used to indicate: 1. pressure 2. temperature 3. position 4. quantity 1 and 3 2 and 4 1 and 2.
Counterweights on constant-speed propellers are generally used to aid in: increasing blade angle unfeathering the propellers decreasing blade angle.
Generally, when maximum APU shaft output power is being used in conjunction with pneumatic power: temperature limits and loads must be carefully monitored by the operator to maintain a safe EGT pneumatic loading will be automatically modulated to maintain a safe EGT electrical loading will be automatically modulated to maintain a safe EGT.
What will be the results of increasing the gap of the breaker points in a magneto? advance the spark and decrease its intensity retard the spark and increase its intensity retard the spark and decrease its intensity.
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