# PHYSICS MCQS for ATC

Prof. Fazal Rehman Shamil

## Non-lifting Flow over Arbitrary Bodies

Solved MCQs on Non-lifting Flow over Arbitrary Bodies in PHYSICS for ATC.

Upon the control point, the boundary condition is applied?
(A). False
(B). True
(C). Partially True

Over an arbitrary body, the Purpose of non-lifting flow is to find ________
(A). A numerical method
(B). A mathematical method
(C). A lifting body
(D). A drag body
(E). None of these

In free stream velocity, the arbitrarily shaped body can be used?
(A). True
(B). False
(C). Partially True

Over a given panel why source strength ‘X’ per unit length is constant?
(A). From one panel to the next panel this allows it to vary
(B). From one panel to the next panel this does not allow it to vary
(C). This remains in the same panel
(D). From panel to panel the length will be changed
(E). None of these

To synthesize the flow over a specified body the combination of elementary flows is used?
(A). False
(B). True
(C). Partially True

The standard aerodynamic tool in the industry is the source panel method?
(A). False
(B). True
(C). Partially True

As a distinct source of strength can a small section of the source sheet be treated?
(A). False
(B). True
(C). Partially True

By the entire source sheet from a to b complete velocity potential at point ‘p’ is obtained?
(A). True
(B). False
(C). Partially True

The analysis of low-speed flows has been revolutionized by numerical solution of vortex and source panel techniques?
(A). True
(B). False
(C). Partially True

When directed away from the body the vector (v) is positive?
(A). True
(B). False
(C). Partially True

At the rth control point which of the following is a normal component of the flow velocity?
(A). Sum of the free stream
(B). Sum of the source line
(C). Sum of the sink line
(D). Sum of the sink line and source
(E). None of these

## Non lifting Flow over Cylinder

When sin ?=0 which of the following will be the shape of Rankine oval?
(A). vertical line
(B). horizontal line
(C). a point
(D). curve
(E). None of these

The function of stream can be obtained by ____
(A). stream function of doublet flow and uniform flow sum
(B). Stream function of doublet flow and uniform flow difference
(C). stream function of source flow and uniform flow sum
(D). Stream function of sink flow and uniform flow sum
(E). None of these

Which of the following is flow past cylinder?
(A). Vortex flow
(B). Source flow
(C). Rankine oval of equal axes
(D). Newton’s ring
(E). None of these

Is zero drag acceptable In real life?
(A). True
(B). False
(E). None of these

When U*y+ ((-u/2*pi*r) = 0, which of the following will be the shape of Rankine oval?
(A). open curve
(B). closed body profile
(C). straight line
(D). point
(E). None of these

Doublet flow and uniform flow combination gives flow _____
(A). Past a circular cylinder
(B). Past a wedge
(C). Past a plate
(D). Over anybody
(E). None of these

By substituting ____the shape of Rankine oval of equal axes can be found out?
(A). ?=0
(B). ?=1
(C). U=0
(D). U=1
(E). None of these

In the flow over a cylinder, the amount of lift will be generated _________
(A). Infinity
(B). Positive lift
(C). Negative lift
(D). No lift
(E). None of these Prof.Fazal Rehman Shamil (Available for Professional Discussions)