Exam Details
| Subject | Mechanics of Fluids | |
| Paper | ||
| Exam / Course | B.Tech. Civil (Construction Management) / (Water Resources Engineering)/ (Aero Space Engineering) BTCM-BTWRE | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 4 IET-20l(A) I
B.Tech. Civil (Construction Management) I
B.Tech. Civil (Water Resources Engineering) I
B.Tech. (Aerospace Engineering)
Term-End Examination
00203
December, 2016
ET-201(A) MECHANICS OF FLUIDS
Time: 3 hours Maximum Marks: 70
Note: Attempt any seven questions. Assume any missing data suitably. Use of non-programmable calculator is permitted.
1. What is Buoyant force Explain the stability of submerged and floating bodies. 5
What is a fluid Explain the different properties of a fluid. 5
2. Write the expression for equation of continuity. A fluid flow field is given by
v x^2y i y^2z j (2xyz+yz^2)k.
Prove that it is a case of possible steady incompressible flow. Calculate the velocity and acceleration at the point 6). 2+8
3. What is n-theorem What is the significance of n-theorem 5
Explain the method of repeating variables. 5
4. A jet of water emerges from a nozzle 1 cm in diameter at a velocity of 15 m/sec. The jet is found to break into a spray at a distance of 15 cm from the nozzle. The surface tension of the fluid is o1 50 dynes/cm. Another fluid with the mass density P2 =0.9P1, kinematic viscosity v2=1.1 v1 and surface tension 75 dynes/cm issues from a geometrically similar nozzle. If the two nozzle flows are to be kinematically similar, determine the scale factors for length, velocity, force and time. 10
5. What is hydraulic jump Derive the relation for the same for a steady non-uniform flow.
Explain the losses for sudden enlargement in a pipe flow. Show that the loss due to sudden enlargement is given by hl
where v1 inlet velocity,
v2 outlet velocity.
6. Describe the working of a venturimeter and an orifice meter. 5
Show that viscous terms become zero for irrotational flow of incompressible fluids in Navier-Stokes equation of motion. 5
7. Define any five of the following: 5x2
Turbulent Flow
Instantaneous Velocity
Isotropic Turbulence
Wall Turbulence
Free Turbulence
Mixing Length
8. Distinguish between the following: 5x1
Centre of pressure and Centre of buoyancy
Velocity potential and Stream function
Single point manometer and Differential manometer
Laminar flow and Turbulent flow
Absolute pressure and Gauge pressure
What is Reynolds Number? Explain its significance. 5
9. Define deformation drag. Also differentiate between form drag and friction drag. 5
Derive the relation for drag on sphere. 5
10. Explain any four of the following: 4x2 1/2=10
Geometric Similarity
Dynamic Similarity
River Models
Surge Tanks
Water Hammer
B.Tech. Civil (Construction Management) I
B.Tech. Civil (Water Resources Engineering) I
B.Tech. (Aerospace Engineering)
Term-End Examination
00203
December, 2016
ET-201(A) MECHANICS OF FLUIDS
Time: 3 hours Maximum Marks: 70
Note: Attempt any seven questions. Assume any missing data suitably. Use of non-programmable calculator is permitted.
1. What is Buoyant force Explain the stability of submerged and floating bodies. 5
What is a fluid Explain the different properties of a fluid. 5
2. Write the expression for equation of continuity. A fluid flow field is given by
v x^2y i y^2z j (2xyz+yz^2)k.
Prove that it is a case of possible steady incompressible flow. Calculate the velocity and acceleration at the point 6). 2+8
3. What is n-theorem What is the significance of n-theorem 5
Explain the method of repeating variables. 5
4. A jet of water emerges from a nozzle 1 cm in diameter at a velocity of 15 m/sec. The jet is found to break into a spray at a distance of 15 cm from the nozzle. The surface tension of the fluid is o1 50 dynes/cm. Another fluid with the mass density P2 =0.9P1, kinematic viscosity v2=1.1 v1 and surface tension 75 dynes/cm issues from a geometrically similar nozzle. If the two nozzle flows are to be kinematically similar, determine the scale factors for length, velocity, force and time. 10
5. What is hydraulic jump Derive the relation for the same for a steady non-uniform flow.
Explain the losses for sudden enlargement in a pipe flow. Show that the loss due to sudden enlargement is given by hl
where v1 inlet velocity,
v2 outlet velocity.
6. Describe the working of a venturimeter and an orifice meter. 5
Show that viscous terms become zero for irrotational flow of incompressible fluids in Navier-Stokes equation of motion. 5
7. Define any five of the following: 5x2
Turbulent Flow
Instantaneous Velocity
Isotropic Turbulence
Wall Turbulence
Free Turbulence
Mixing Length
8. Distinguish between the following: 5x1
Centre of pressure and Centre of buoyancy
Velocity potential and Stream function
Single point manometer and Differential manometer
Laminar flow and Turbulent flow
Absolute pressure and Gauge pressure
What is Reynolds Number? Explain its significance. 5
9. Define deformation drag. Also differentiate between form drag and friction drag. 5
Derive the relation for drag on sphere. 5
10. Explain any four of the following: 4x2 1/2=10
Geometric Similarity
Dynamic Similarity
River Models
Surge Tanks
Water Hammer
Other Question Papers
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