Drag (physics) - Quiz
A) Inertial force B) Fluid resistance C) Static pressure D) Gravitational drag
A) In the same direction as motion B) Opposite to the direction of motion C) Perpendicular to the motion D) Randomly relative to the motion
A) Maintain constant velocity B) Increase the velocity C) Eliminate the velocity entirely D) Decrease the velocity
A) Reynolds number B) Stokes number C) Bejan number D) Mach number
A) Proportional to velocity squared B) Inversely proportional to velocity C) Proportional to velocity D) Proportional to velocity cubed
A) Form drag B) Wave drag C) Induced drag D) Skin friction drag
A) Skin friction drag B) Parasitic drag C) Form drag D) Wave drag
A) Wave drag and lift-induced drag B) Form drag and skin friction drag C) Viscous drag and inertial drag D) Form drag and wave drag
A) Laminar body B) Streamlined body C) Efficient body D) Bluff body
A) Presence of shockwaves B) Cross-sectional area C) Angle of attack D) Surface roughness
A) It disappears B) It remains constant C) It increases D) It decreases
A) Trailing vortices B) Shockwaves C) Form drag D) Skin friction
A) At the onset of stall B) As angle of attack increases C) When drag coefficient decreases D) As speed increases
A) Comparing the drag of different aircraft B) Determining the fuel tank capacity C) Calculating the total weight of an aircraft D) Measuring the wing surface area
A) As the square of the speed B) Independent of speed C) Linearly with speed D) As the cube of the speed
A) Dynamic viscosity divided by density B) Velocity divided by density C) Density divided by dynamic viscosity D) Dynamic viscosity multiplied by density
A) The square of the speed B) The cube of the speed C) The fourth power of the speed D) The speed |
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