CE1211 Solid & Fluid Mechanics B.E Question Bank : niceindia.com
Name of the College : Noorul Islam College of Engineering
University : Anna University
Degree : B.E
Department : Electronics and Instrumentation Engineering
Subject Code/Name : CE 1211 – Solid & Fluid Mechanics
Year : II
Semester : III
Document Type : Question Bank
Website : niceindia.com
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/niceindia.com/3008-CE1211_SOLID_AND_FLUID_MECHANICS.pdf
NICE Solid & Fluid Mechanics Question Paper
Unit – I
1. Define stress :
When an external force acts on a body, it undergoes deformation. At the same time the body resists deformation. The magnitude of the resisting force is numerically equal to the applied force. This internal resisting force per unit area is called stress.
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Stress = Force/Area When a body is subjected to an external force, there is some change of dimension in the body. Numerically the strain is equal to the ratio of change in length to the original length of the body.
2. Define strain :
Strain = Change in length/Original length
3. State Hooke’s law :
It states that when a material is loaded, within its elastic limit, the stress is directly proportional to the strain.
4. Define shear stress and shear strain :
The two equal and opposite force act tangentially on any cross sectional plane of the body tending to slide one part of the body over the other part. The stress induced is called shear stress and the corresponding strain is known as shear strain.
5. Define Poisson’s ratio :
When a body is stressed, within its elastic limit, the ratio of lateral strain to the longitudinal strain is constant for a given material.
Poisson’ ratio (µ or 1/m) = Lateral strain /Longitudinal strain
6. State the relationship between Young’s Modulus and Modulus of Rigidity :
E = 2G (1+1/m)
Where,
E – Young’s Modulus
K – Bulk Modulus
1/m – Poisson’s ratio
7. Define strain energy :
Whenever a body is strained, some amount of energy is absorbed in the body. The energy which is absorbed in the body due to straining effect is known as strain energy.
8. Give the relationship between Bulk Modulus and Young’s Modulus :
E = 3K (1-2/m)
Where,
E – Young’s Modulus
K – Bulk Modulus
1/m – Poisson’s ratio
9. What is compound bar :
A composite bar composed of two or more different materials joined together such that system is elongated or compressed in a single unit.
10. Define- elastic limit :
Some external force is acting on the body, the body tends to deformation. If the force is released from the body its regain to the original position. This is called elastic limit
11. Define – Young’s modulus :
The ratio of stress and strain is constant with in the elastic limit.
E = Stress/Strain
12. Define Bulk-modulus :
The ratio of direct stress to volumetric strain.
K = Direct stress
Volumetric strain
13. Define- lateral strain :
When a body is subjected to axial load P. The length of the body is increased. The axial deformation of the length of the body is called lateral strain.
13. Define- longitudinal strain :
The strain right angle to the direction of the applied load is called lateral strain.
14. What is principle of super position:
The resultant deformation of the body is equal to the algebric sum of the deformation of the individual section. Such principle is called as principle of super position
15. Define- Rigidity modulus :
The shear stress is directly proportional to shear strain.
N = Shear stress/ Shear strain
Unit – II
1. Define point of contra flexure? In which beam it occurs? Point at which BM changes to zero is point of contra flexure. It occurs in overhangingbeam.
2. What is mean by positive or sagging BM? BM is said to positive if moment on left side of beam is clockwise or right side of the beam is counter clockwise.
3. What is mean by negative or hogging BM? BM is said to negative if moment on left side of beam is counterclockwise or right side of the beam is clockwise.
4. Define shear force and bending moment? SF at any cross section is defined as algebraic sum of all the forces acting either side of beam. BM at any cross section is defined as algebraic sum of the moments of all the forces which are placed either side from that point.
5. When will bending moment is maximum? BM will be maximum when shear force change its sign.
6. What is maximum bending moment in a simply supported beam of span ‘L’ subjected to UDL of ‘w’ over entire span Max BM =wL2/8
7. In a simply supported beam how will you locate point of maximum bending moment? The bending moment is max. when SF is zero. Write SF equation at that point and equating to zero we can find out the distances ‘x’ from one end .then find maximum bending moment at that point by taking all moment on right or left hand side of beam.
8. What is shear force? The algebric sum of the vertical forces at any section of the beam to the left or right of the section is called shear force.
9. What is shear force and bending moment diagram? It shows the variation of the shear force and bending moment along the length of the beam.
10. What are the types of beams?
1. Cantilever beam
2. Simply supported beam
3. Fixed beam
4. Continuous beam