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