NAVEDTRA 14014 Exam Questions With Complete Solutions

NAVEDTRA 14014 Exam Questions With Complete Solutions The study of the forces that enable an aircraft to fly is referred to by what term? 1. Thermodynamics 2. Aerodynamics 3. Hydrodynamics 4. General dynamics - answer2. Aerodynamics Which of the following is a definition of motion? 1. The act or process of changing place or position 2. The act or process of achieving inertia 3. The overcoming of force 4. The resistance to force - answer1. The act or process of changing place or position Which of the following terms refers to Newton's first law of motion? 1. Force 2. Action and reaction 3. Inertia 4. Gravity - answer3. Inertia Thrust must overcome inertia before an aircraft can fly. This is an example of which of the following laws of motion? 1. Newton's first law 2. Newton's second law 3. Newton's third law - answer1. Newton's first law Newton's law of inertia applies to bodies that are affected in which of the following ways? 1. Those that are at rest only 2. Those moving in a straight line at a uniform speed only 3. Those at rest and moving at a uniform speed in a straight line 4. The willingness of an object to remain at rest or continue in motion - answer3. Those at rest and moving at a uniform speed in a straight line What law of motion is the "force" law? 1. Newton's first law 2. Newton's second law 3. Newton's third law - answer2. Newton's second law The fact that "for every action there is an equal and opposite reaction" is discussed in which of Newton's laws of motion? 1. First 2. Second 3. Third - answer3. Third At what location is the area of least pressure? 1. To the left of the airfoil 2. To the right of the airfoil 3. Beneath the airfoil 4. Over the airfoil - answer4. Over the airfoil At what location is the area of increased flow? 1. Over the airfoil 2. Under the airfoil 3. To the left of the airfoil 4. To the right of the airfoil - answer2. Under the airfoil According to Bernoulli's principle, what happens to the speed and pressure of a fluid flowing through a tube when the fluid reaches a constriction? 1. The speed and pressure of the fluid increases 2. The speed and pressure of the fluid decreases 3. The speed decreases and the pressure increases 4. The speed increases and the pressure decreases - answer1. The speed and pressure of the fluid increases Which of the following components are classified as airfoils? 1. The wings of an aircraft 2. The rotor blades of a helicopter 3. The propeller blades of a turboprop aircraft 4. All of the above - answer4. All of the above What is the front edge or surface of an airfoil? 1. Chamber 2. Chord line 3. Leading edge 4. Trailing edge - answer3. Leading edge What is an imaginary straight line from the leading edge to the trailing edge of an airfoil? 1. Camber 2. Chord line 3. Span 4. Angle of attack - answer2. Chord line Which of the following terms identifies the rear edge or surface of the airfoil? 1. Span line 2. Retreating edge 3. Chord line 4. Trailing edge - answer4. Trailing edge What is the curve or departure from a straight line from the leading edge to the trailing edge of the airfoil? 1. Camber 2. Chord line 3. Angle of attack 4. The angle of incident - answer1. Camber What term is used to describe the direction of the airstream in relation to the airfoil? 1. Angle of attack 2. Directional heading 3. Relative wind 4. Chord line - answer3. Relative wind What is the angle between the chord line and the relative wind called? 1. The angle of attack 2. The resultant angle 3. The control angle 4. The angle of incidence - answer1. The angle of attack The generation of lift by an airfoil is dependent upon which of the following factors? 1. The shape of the airfoil's cord 2. The airfoil being able to create a special airflow in the airstream 3. The airfoil being able to develop lifting pressure over the airfoil surface 4. Both 2 and 3 above - answer2. The airfoil being able to create a special airflow in the airstream As the relative wind strikes the leading edge of an airfoil, the flow of air is split. What part of the airfoil creates the low pressure area on the airfoil's surface? 1. The camber of the airfoil's upper surface 2. The camber of the airfoil's lower surface 3. The trailing edge of the airfoil 4. The leading edge of the airfoil - answer1. The camber of the airfoil's upper surface What speed or pressure causes most of the lift of an airfoil? 1. The speed of the air striking the front of the airfoil 2. The difference in air pressure on the upper and lower surfaces of the airfoil 3. The increase in pressure over the airfoil 4. The decrease in pressure over the airfoil - answer2. The difference in air pressure on the upper and lower surfaces of the airfoil What is the force that is created by an airfoil? 1. Lift 2. Drag 3. Gravity 4. Thrust - answer1. Lift What force overcomes grav