equilibrium of forces laws of motion friction stress strain elastic constants bending moments shear force diagrams torsion buckling of columns thin walled pressure vessels - One Line Questions
1.
The slenderness ratio of a column is the ratio of its effective length to its: —
Radius of gyration
2.
For a column with both ends pinned, the effective length is equal to its: —
Actual length
3.
In a thin-walled pressure vessel, the maximum stress occurs in which direction? —
Circumferential (Hoop)
4.
For a rectangular cross-section of width 'b' and depth 'd', the section modulus (Z) is: —
bd²/2
5.
Which diagram represents the variation of shear force along the length of a beam? —
Shear Force Diagram
6.
A material that can undergo large plastic deformation before fracture is called: —
Ductile
7.
A beam that is supported at both ends and carries a load between the supports is called a: —
Simply supported beam
8.
The maximum shear stress in a solid circular shaft subjected to torsion occurs at the: —
Surface
9.
For a solid circular shaft, the maximum shear stress due to torsion is proportional to the: —
Radius
10.
Hooke's Law states that stress is proportional to strain within the: —
Elastic limit
11.
The critical buckling load for a column with both ends fixed is: —
Four times Euler's load for pinned ends
12.
The maximum shear stress in a thin-walled cylindrical pressure vessel is approximately: —
Half of hoop stress
13.
Hoop stress in a thin-walled cylindrical pressure vessel is generally: —
Twice the longitudinal stress
14.
A body is in equilibrium if the net force acting on it is: —
Equal to zero
15.
Which of Newton's laws of motion states that for every action, there is an equal and opposite reaction? —
Third Law of Motion
16.
The maximum shear force for a cantilever beam with a uniformly distributed load is at the: —
Fixed support
17.
A thin-walled pressure vessel is one where the ratio of the wall thickness to the internal diameter is typically: —
Less than 0.1
18.
The coefficient of kinetic friction is typically: —
Lower than static friction
19.
The coefficient of static friction is generally: —
Greater than the coefficient of kinetic friction
20.
Bulk Modulus (K) relates pressure to: —
Volumetric strain
21.
Poisson's ratio is defined as the ratio of lateral strain to: —
Longitudinal strain
22.
For a thin-walled pressure vessel, the stress intensity (difference between maximum and minimum principal stresses) is equal to the: —
Hoop stress
23.
For a ductile material, the yield strength is typically: —
Lower than the ultimate tensile strength
24.
If a beam is subjected to pure bending, the shear force is: —
Zero
25.
Which of the following is a unit of stress? —
N/m²
26.
Which of the following is a unit of strain? —
m/m
27.
In a thin-walled cylindrical pressure vessel, the hoop stress (circumferential stress) is given by: —
pd/2t
28.
In a thin-walled cylindrical pressure vessel, the longitudinal stress (axial stress) is given by: —
pd/2t
29.
For a thin-walled spherical pressure vessel, the stress in any direction tangential to the surface is: —
pd/2t
30.
Young's Modulus (E) is a measure of a material's: —
Resistance to elastic deformation under tensile or compressive stress
31.
In a bending moment diagram, the area under the shear force diagram between two sections represents the: —
Change in bending moment between the sections
32.
Which of the following is an elastic constant? —
Shear modulus
33.
Euler's formula for buckling load is applicable for columns that are: —
Long and slender
34.
The ability of a material to absorb energy up to fracture is called: —
Toughness
35.
When a body is sliding down an inclined plane, the angle of friction is related to the angle of inclination by: —
tan(friction angle) = tan(inclination angle)
36.
Torsion is the twisting of an object due to: —
Torque
37.
Buckling is a phenomenon associated with: —
Compressive members
38.
Shear Modulus (G) relates stress and strain in: —
Shear
39.
The critical buckling load for a column with one end fixed and the other end free is given by P = π²EI/(Le)² where Le is: —
Twice the actual length
40.
For a simply supported beam with a concentrated load at the center, the bending moment is maximum at: —
The center
41.
In the torsion formula, τ = Tr/J, what does 'J' represent? —
Polar moment of inertia
42.
The product of Young's modulus and the polar moment of inertia is related to the: —
Flexural rigidity
43.
The point on the stress-strain curve where the material begins to deform plastically is called the: —
Yield point
44.
Stress is defined as force per unit: —
Area
45.
Strain is defined as the ratio of change in length to the original: —
Length
46.
In the context of column buckling, the term 'crippling load' is synonymous with: —
Critical load
47.
The maximum stress that a material can withstand without permanent deformation is known as the: —
Elastic limit
48.
A force system is in equilibrium if the algebraic sum of moments about any point is: —
Zero
49.
The bending moment is maximum where the shear force is: —
Zero or changes sign
50.
The polar moment of inertia for a solid circular shaft of radius 'r' is: —
πr⁴/4