Fluid Dynamics MCQs for MDCAT Practice

Physics section, Fluid Dynamics chapter. Sample questions from past PMC papers.

1. Question 1
   Laminar flow is characterized by?
   • A.A: Regular flow
   • B.B: Steady flow
   • C.C: Noiseless
   • D.D: All of the above
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
2. Question 2
   Two meter high tank is full of water, a hole is made in the middle of the tank. The speed of efflux is
   • A.4.9 m/s
   • B.9.8 m/s
   • C.4.42 m/s
   • D.3.75 m/s
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
3. Question 3
   For a very fast moving object, drag force and velocity have the following relation:
   • A.Not related in anyway
   • B.Direct
   • C.None of the above
   • D.Inverse
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
4. Question 4
   Air is streaming past a horizontal air plane wing such that its speed in 120 m/s over the upper surface and 90 m/s at the lower surface. If the density of air is 1.3 kg per metre3 and the wing is 10 m long and has an average width of 2m, then the difference of the pressure on the two sides of the wing of :
   • A.4095.0 Pascal
   • B.409.50 Pascal
   • C.40.950 Pascal
   • D.4.0950 Pascal
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
5. Question 5
   The dimensions of pressure is:
   • A.[M-1L2T-2]
   • B.[ML-1T]
   • C.[M-1L-2T-2]
   • D.[ML-1T-2]
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
6. Question 6
   A two-meter-high tank is full of water. A hole is made in the middle of the tank. The speed of efflux is:
   • A.4.9ms-1
   • B.9.8ms-1
   • C.4.42ms-1
   • D.3.75ms-1
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
7. Question 7
   The terminal velocity of eight droplets having same mass and size is Vt, when they are mixed together to form a single drop, their combined terminal velocity is
   • A.4Vt
   • B.2Vt
   • C.8Vt
   • D.Vt
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
8. Question 8
   A fluid flows steadily through a pipe and small disturbances begin to appear in the flow pattern. Which statement is most appropriate?
   • A.Flow must be fully turbulent
   • B.Flow is still laminar
   • C.Flow is in a transition stage
   • D.Flow is independent of viscosity
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.