FLUID MECHANICS MCQS SET 04
1. Which kind of turbine is a Pelton Wheel turbine?
a) Tangential flow turbine.
b) Radial flow turbine
c) Outward flow turbine
d) Inward flow turbine
a) Tangential flow turbine.
b) Radial flow turbine
c) Outward flow turbine
d) Inward flow turbine
Answer: a
2. IN what type of turbine water enters in radial direction and leaves axial direction?
a) Tangential flow turbine
b) Axial flow turbine
c) Outward flow turbine
d) Mixed flow turbine
2. IN what type of turbine water enters in radial direction and leaves axial direction?
a) Tangential flow turbine
b) Axial flow turbine
c) Outward flow turbine
d) Mixed flow turbine
Answer: d
3. How many types of turbines can you classify on the basis of direction of flow through runner?
a) 6
b) 3
c) 4
d) 7
3. How many types of turbines can you classify on the basis of direction of flow through runner?
a) 6
b) 3
c) 4
d) 7
Answer: c
4. Into how many types can you classify radial flow turbines?
a) 4
b) 3
c) 6
d) 2
4. Into how many types can you classify radial flow turbines?
a) 4
b) 3
c) 6
d) 2
Answer: d
5. Into how many types can you classify turbines on basis of head at inlet?
a) 3
b) 4
c) 6
d) 5
5. Into how many types can you classify turbines on basis of head at inlet?
a) 3
b) 4
c) 6
d) 5
Answer: a
6. Which method is used exclusively in fluid mechanics?
a) Lagrangian method
b) Eulerian method
c) Both Lagrangian and Eulerian methods
d) Neither Lagrangian nor Eulerian method
6. Which method is used exclusively in fluid mechanics?
a) Lagrangian method
b) Eulerian method
c) Both Lagrangian and Eulerian methods
d) Neither Lagrangian nor Eulerian method
Answer: b
7. What type of flow can be taken for granted in a pipe of a uniform cross-section?
a) steady
b) unsteady
c) uniform
d) non-uniform
7. What type of flow can be taken for granted in a pipe of a uniform cross-section?
a) steady
b) unsteady
c) uniform
d) non-uniform
Answer: c
8. Can the flow inside a nozzle be steady and uniform?
a) yes
b) never
c) it can be steady but never uniform
d) it can be uniform but never steady
a) yes
b) never
c) it can be steady but never uniform
d) it can be uniform but never steady
Answer: c
9. Which of the following statements is true regarding one and two-dimensional flows?
a) Flow in a pipe is always taken as one-dimensional flow
b) Flow in a pipe is always taken as two-dimensional flow
c) Flow in a pipe is taken as one-dimensional flow when average flow parameters are considered
d) Flow in a pipe is taken as two-dimensional flow when average flow parameters are considered
a) Flow in a pipe is always taken as one-dimensional flow
b) Flow in a pipe is always taken as two-dimensional flow
c) Flow in a pipe is taken as one-dimensional flow when average flow parameters are considered
d) Flow in a pipe is taken as two-dimensional flow when average flow parameters are considered
Answer: c
10. Which of the following is true?
a) Flow is rotational inside the boundary layer and irrotational outside
b) Flow is irrotational inside the boundary layer and rotational outside
c) Flow is rotational both inside and outside of the boundary layer
d) Flow is irrotational both inside and outside of the boundary layer
a) Flow is rotational inside the boundary layer and irrotational outside
b) Flow is irrotational inside the boundary layer and rotational outside
c) Flow is rotational both inside and outside of the boundary layer
d) Flow is irrotational both inside and outside of the boundary layer
Answer: a
11. Which of the following is true?
a) Flow is laminar inside the boundary layer and turbulent outside
b) Flow is turbulent inside the boundary layer and laminar outside
c) Flow is laminar both inside and outside of the boundary layer
d) Flow is turbulent both inside and outside of the boundary layer
11. Which of the following is true?
a) Flow is laminar inside the boundary layer and turbulent outside
b) Flow is turbulent inside the boundary layer and laminar outside
c) Flow is laminar both inside and outside of the boundary layer
d) Flow is turbulent both inside and outside of the boundary layer
Answer: a
12. “The velocity of entrance and exit through a nozzle remains the same.” Is this ever possible?
a) only if the flow is compressible
b) only if the flow is laminar
c) only if the flow is rotational
d) never possible
a) only if the flow is compressible
b) only if the flow is laminar
c) only if the flow is rotational
d) never possible
Answer: a
13. Three flows named as 1,2 and 3 are observed. The Reynold’s number for the three are 100, 1000 and 10000. Which of the flows will be laminar?
a) only 1
b) only 1 and 2
c) 1, 2 and 3
d) only 3
a) only 1
b) only 1 and 2
c) 1, 2 and 3
d) only 3
Answer: b
14. Three flows named as 1,2 and 3 are observed. The flow velocities are v1 and v2. If all other geometrical factors remain the same along with the fluid considered, flow is more likely to be laminar?
a) flow 1 if v1 > v2
b) flow 2 if v1 > v2
c) always flow 1
d) always flow 2
14. Three flows named as 1,2 and 3 are observed. The flow velocities are v1 and v2. If all other geometrical factors remain the same along with the fluid considered, flow is more likely to be laminar?
a) flow 1 if v1 > v2
b) flow 2 if v1 > v2
c) always flow 1
d) always flow 2
Answer: b
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