# Physics ETEA MCQs

Solved repeated ETEA  MCQs of Physics covering the Lifting Flow over Cylinder in Aerodynamics.

To delay the separation of the flow which of the following visualization types are used?
(A). PVT
(B). Surface oil film technique
(C). Smoke flow visualization
(E). None of these

Drag on the cylinder is made due to?
(A). Viscous effect
(B). Friction
(C). Boundary layer
(D). Surface layer
(E). None of these

Which of the following is lift upon cylinder?
(A). One
(B). Zero
(C). Negative
(D). Greater than zero
(E). None of these

When the cylinder is placed in the wind tunnel stagnation’s point position?
(A). Lower part
(B). Upper part
(C). Middle part
(D). No stagnation point
(E). None of these

By installing the small cylinder how much the drag reduces?
(A). 48%
(B). 65%
(C). 40%
(D). 85%
(E). None of these

Which of the following techniques of visualization are in the quantitative flow?
(A). Smoke flow visualization
(B). Surface framing
(E). None of these

By which of the following finite lift in the cylinder is measured?
(A). Moving up and down
(B). Moving up
(C). Moving left and right
(D). Spinning cylinder
(E). None of these

Because of what more drag is created by the circular cylinder?
(A). The difference of pressure between the downstream and upstream direction of flow
(B). The difference of pressure between downstream and relative wind direction of flow
(C). The difference of pressure between direction and upstream of the flow
(D). The difference of pressure between downstream of the flow
(E). None of these

In the wind tunnel test, the cylinder vibrates due to?
(A). High pressure
(B). Low pressure
(C). Relative pressure
(D). Fluctuations in the flow
(E). None of these

To reduce the drag co-efficient over a cylinder Which of the following method of passive flow control is used?
(A). Surface framing
(B). Flow visualization
(C). Roughened surfaces
(D). Wiring surfaces
(E). None of these

At the top of the cylinder which of the following is the velocity flow?
(A). Higher
(B). Lower
(C). Constant
(D). Does not varies
(E). None of these