Download OU B-Tech First Year 2013 December 6007 Engineering Mechanics Question Paper

Download OU (Osmania University) B.Tech (Bachelor of Technology) First Year (1st Year) 2013 December 6007 Engineering Mechanics Question Paper

Code No. 6007
FACULTY OF ENGINEERING & INFORMATICS
B.E. I ? Year (Suppl.) (Common to all Branches) Examination, December 2013
Subject: Engineering Mechanics
Time: 3 Hours Max. Marks: 75
Note: Answer all questions from Part A. Answer any five questions from Part B.
PART ? A (25 Marks)
1. State and prove the parallelogram law.
(3)
2. State the Lami's theorem. (2)
3. Determine the force 'p' required for the block has to move towards right, if the co-
efficient of friction between block and surface is 0.3. (2)
4. Differentiate between static and dynamic friction. (2)
5. Acceleration of a particle is given by a = 6 -\ ?
-
iwherelvl is velocity derive the
expression for displacement of the particle.
(
3
)
6. State the Pappu's theorem.
(3)
7. Motion of the particle is given by s = t
3
? 12t
2
+ 40. Find out the acceleration of the
particle in 10 sec.
(3)
8. State D'Alember'ts principle. (2)
9. Derive the work-energy principle. (2)
10. Differentiate direct and oblique impact.
(
3
)
PART ? B (50 Marks)
11 (a) Find the reactions of the simply supported beam as shown in Fig. 1
(5)
Fig. 1
(b) Find the magnitude of `T' required for the beam to be in equilibrium, if it is resting on
smooth surfaces.
(5)
Fig 2
12. Locate the centroid of a non-linear plate as shown in Fig. 3.
(10)
.. 2
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Code No. 6007
FACULTY OF ENGINEERING & INFORMATICS
B.E. I ? Year (Suppl.) (Common to all Branches) Examination, December 2013
Subject: Engineering Mechanics
Time: 3 Hours Max. Marks: 75
Note: Answer all questions from Part A. Answer any five questions from Part B.
PART ? A (25 Marks)
1. State and prove the parallelogram law.
(3)
2. State the Lami's theorem. (2)
3. Determine the force 'p' required for the block has to move towards right, if the co-
efficient of friction between block and surface is 0.3. (2)
4. Differentiate between static and dynamic friction. (2)
5. Acceleration of a particle is given by a = 6 -\ ?
-
iwherelvl is velocity derive the
expression for displacement of the particle.
(
3
)
6. State the Pappu's theorem.
(3)
7. Motion of the particle is given by s = t
3
? 12t
2
+ 40. Find out the acceleration of the
particle in 10 sec.
(3)
8. State D'Alember'ts principle. (2)
9. Derive the work-energy principle. (2)
10. Differentiate direct and oblique impact.
(
3
)
PART ? B (50 Marks)
11 (a) Find the reactions of the simply supported beam as shown in Fig. 1
(5)
Fig. 1
(b) Find the magnitude of `T' required for the beam to be in equilibrium, if it is resting on
smooth surfaces.
(5)
Fig 2
12. Locate the centroid of a non-linear plate as shown in Fig. 3.
(10)
.. 2
Code No. 6007
..2..
13. Find the force 'pl required for the wedge block as shown in Fig. 4 if the co-
efficient of friction at all the contact surfaces is 0.3. (10)
Fig 4
14. Calculate the moment of inertia for a hatched area about XX. (10)
Fig 5
15. Find out the acceleration of block 'B' required for the connecting bodies as shown
in Fig. 6 if the kinetic friction under 200 kN block is 0.2.
a/4= L
(10)
A
Fig 6
16. Determine the deformation of the spring as shown in Fig. 7, if 50 N weight of
block is releases from the rest. (Use work-energy principle) (10)
Fig 7
17 (a) State the principle of impulse momentum (2)
(b) A bullet weighing 0.3 N and moving with a velocity 660 nips, penetrates a wooden
block of weight 45 N and emerges with a velocity of 180 mps as shown. How long
the block moves?
(8)
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