Questions and Answers
Which aluminum alloy cannot be heat treated repeatedly without harmful effects?
What type of flaw is primarily detected by magnetic particle inspection?
Which Vernier scale graduation number represents the finest measurement in a micrometer?
Which type of crack can be detected by magnetic particle inspection using circular magnetization?
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How is a clevis bolt used with a fork-end cable terminal typically secured?
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What is the total piston displacement of an engine?
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How many gallons are contained in a tank measuring 2 feet wide, 3 feet long, and 1 foot 8 inches deep?
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What is the square root of 4 raised to the 5th power?
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What is the fractional equivalent for a 0.0625-inch thick sheet of aluminum?
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What percent of the maximum part life has been achieved if the average life of 15 parts removed is 835.3 hours with a maximum life of 1100 hours?
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What happens to the pressure of a confined gas when its volume is doubled, assuming temperature remains constant?
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Which condition describes the actual amount of water vapor in a mixture of air and water?
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What is the effect of a missing stall strip on an airplane wing?
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In physics, which of the following factors are essential to determine power?
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What describes the difference between unmetered and metered pressure?
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Which factor most significantly affects the speed of sound in the atmosphere?
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What is absolute humidity?
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What is the desired effect of using winglets on an aircraft’s wingtips?
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If the fluid pressure is 800 psi in a ½ inch line supplying an actuating cylinder with a piston area of 10 square inches, what is the force exerted on the piston?
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What is the primary purpose of dihedral angle in aircraft wings?
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What happens to the pressure of a confined gas if both its volume and absolute temperature are doubled?
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What is the total work input required to move a loaded hoist that weighs 350 pounds, raised 3 feet and then moved forward 12 feet, with a constant force of 70 pounds?
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What is the work input required to lower a 120 pound weight from a height of a 3 foot table to the floor?
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What is the purpose of stall strips installed on airplane wings?
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Which characteristic does a wing with a very high aspect ratio have when compared to a low aspect ratio wing?
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Study Notes
Engine Displacement
- Total piston displacement indicates the volume displaced by all pistons during one crankshaft revolution.
- It also represents the total volume of all engine cylinders.
Fuel Tank Calculation
- The volume of a rectangular tank measuring 2 feet wide, 3 feet long, and 1 foot 8 inches deep can be converted to gallons.
- Conversion factor: 7.5 gallons equal 1 cubic foot.
Triangle Area Calculation
- Area options for specific triangle dimensions include:
- 12 square inches
- 6 square inches
- 15 square inches
Exponent and Algebra
- The square root of 4 raised to the 5th power calculates to 64.
- A fractional equivalent for a 0.0625-inch thickness is 1/16.
Scientific Notation
- Example in scientific notation: 3.47 x 10^4 equals 34,700.
- Recognize the form of scientific notation in numerical expressions.
Material Properties
- Aluminum alloy composition can vary, including options with various copper percentages and zinc content.
- Certain materials, such as unclad aluminum alloy, cannot be heat treated repeatedly without damage.
Inspection Methods
- Magnetic particle inspection is primarily used to detect surface flaws and distortions in metal components.
Measurement Tools
- Vernier scale graduation on a micrometer can commonly be represented as .0001.
- Piston ring clearance is typically measured with a micrometer caliper.
Aircraft Applications
- AN clevis bolts are utilized in specific airplane designs for structural integrity.
- The primary function of stall strips on wings is to ensure wing root areas stall first, significantly influencing lift and control.
Gas Laws
- If the volume of a confined gas doubles at constant temperature, the pressure is halved according to Boyle’s law.
Humidity Concepts
- Absolute humidity refers to the actual amount of water vapor present in the air mixture.
- Relative humidity is a measure of how much water vapor is in the air compared to the maximum it could hold at a given temperature.
Physics of Sound
- The speed of sound in the atmosphere is affected primarily by ambient temperature variations.
Work Input Calculations
- Total work input for moving an engine with 70 pounds of force over specified distances is computed through distance and force relationships.
- The work required to lower a weight from a table and rolling a barrel up an incline can be calculated based on weight and height.
Aspect Ratio in Wings
- High aspect ratio wings typically exhibit low stall speeds and increased drag during high angles of attack, affecting aircraft performance.
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Description
Test your knowledge on natural sciences and mathematics fundamentals, focusing on engine displacement and calculations related to fuel volume. This quiz combines questions from both subjects to enhance your understanding of practical applications in science and math.
