A sphere is moving in water with a velocity of 1.6 m/s. Another sphere – McqOptions

MCQOPTIONS

1.	A sphere is moving in water with a velocity of 1.6 m/s. Another sphere of twice the diameter is placed in a wind tunnel and tested with air which is 750 times less dense and 60 times less viscous than water. The velocity of air that will give dynamically similar conditions is
A.	5 m/s
B.	10 m/s
C.	20 m/s
D.	40 m/s
Answer» C. 20 m/s

Discussion

No Comment Found

Related MCQs

For a dynamic similarity between a model and a prototype, the ratio of their forces in the model and the prototype must be equal.
The similarity between the forces of model and prototype is ________
Match the dimensionless parameters in Group – I with the corresponding ratio In Group – IIGroup IIGroup – IIP. Mach number1. Ratio of inertia force and gravitational forceQ. Reynolds number2. Ratio of fluid velocity and velocity of soundR. Weber number3. Ratio of inertia force and viscous forceS. Froude number4 Ratio of inertia force and surface tension force
Hydraulic ram is a device used
Froude number is important for:
If the Mach number for a compressible fluid flow is less than 1, the flow is
A flow is said to be supersonic, if the
A 2 m wide rectangular channel carries a discharge of 10 m3/s. What would be the depth of flow if the Froude number of the flow is 2.0 ?
In model similarity, if gravitational and inertia forces are the only important forces, then what is the discharge ratio (Note: Lr is the ratio of length dimension)?
Model analysis of aeroplanes and projectile moving at supersonic speed is based on.