FLUID MECHANICS MCQS SET 05

FLUID MECHANICS MCQS SET 05

1. How can we determine whether the flow is laminar or turbulent?
a) Reynold’s number
b) Mach number
c) Froude number
d) Knudsen number
 

Answer: a

2. The flow separation occurs when the fluid travels away from the __________
a) Surface
b) Fluid body
c) Adverse pressure gradient
d) Inter-molecular spaces
Answer: c

3. The swirl caused due to eddies are called as ______
a) Vortices
b) Vertices
c) Volume
d) Velocity
 

Answer: a

4. Eddy viscosity is a turbulent transfer of_________
a) Fluid
b) Heat
c) Momentum
d) Pressure
 

Answer: c

5. Which among the following is a device that converts a laminar flow into a turbulent flow?
a) Dead Weight Gauge
b) Vacuum Gauge
c) Turbulator
d) Ionization Gauge
 

Answer: c

6. Boundary layer separation does not undergo detachment.
a) True
b) False
 

Answer: b

7. With the boundary layer separation, displacement thickness________
a) Increases
b) Decreases
c) Remains Same
d) Independent
 

Answer: a

8. What is the instrument used for the automatic control scheme during the fluid flow?
a) Rotameters
b) Pulley plates
c) Rotary Piston
d) Pilot Static Tube
 

Answer: d

9. What is D’Alembert’s Paradox?
a) Resistance= 0
b) Drag force= 0
c) Temperature = 0
d) Pressure gradient= 0
 

Answer: b
 

10. The steady- state flow must satisfy ___________
a) Kirchhoff’s law
b) Newtons law
c) Rutherford’s experiment
d) Kepler’s law
 

Answer: a