• Aerospace & Aeronautical Reference

# Vortex - Aerodynamics MCQ Questions

Vortex MCQs : Here you will find MCQ Questions related to "Vortex" in Aerodynamics. These Vortex MCQ Questions Will help you to improve your Aerodynamics knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations

Question 1

Vortices are a major component of?

A. Lifting Flow
B. Nonlifting Flow
C. Doublet Flow
D. Turbulent flow

Question 2

In most vortices, the fluid flow velocity is greatest next to its axis and _________ in inverse proportion to the distance from the axis.

A. increases
B. decreases
C. same
D. All of the above

Question 3

In the absence of external forces, a vortex usually evolves fairly quickly toward the irrotational flow pattern, where the flow velocity u is inversely proportional to the distance r. Irrotational vortices are also called?

A. Irrotational vortices
B. Rotational vortices
C. free vortices
D. stationary vortices

Question 4

A surface that is everywhere tangent to both flow velocity and vorticity is called a?

B. helmholtz tube
C. vortex tube
D. None of the above

Question 5

The fluid motion in a vortex creates a dynamic pressure (in addition to any hydrostatic pressure) that is lowest in the core region.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

Question 6

Vortices need be steady-state features; they can not move and change shape.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

Question 7

Vortices form in stirred fluids, and may be observed in?

A. smoke rings
B. whirlpools in the wake of a boat
C. dust devil
D. All of the above

Question 8

The free vortex flow forms _________

A. straight lines
B. hyperbola
C. parabola
D. concentric circles

Question 9

Except at the origin where r=0, the vortex flow is ___________

A. rotational
B. laminar
C. irrotational
D. turbulent