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WorksheetsGEAS 11
Total questions: 50
Worksheet time: 25mins
What is the ratio of the transverse strain to the corresponding axial strain in a body subjected to uniaxial stress?
A. Poisson’s ratio
B. Euler’s ratio
C. Refractive index
D. Dielectric index
What are the four basic forms of deformation of solid bodies?
A. Tension, compression, bending and twisting
B. Tension, compression, elongation and bending
C. Tension, compression, plastic and elastic
D. Tension, compression, elongation and torsion
What is a structural member supported horizontally and carries transverse loading?
A. Beam
B. Column
C. Arch
D. Shaft
What refers to a slender member which prevents parts of a structure moving towards each other under compressive force?
A. Tie
B. Column
C. Panel
D. Strut
What refers to the point in which the bending moment changes sign through a zero value?
A. Critical point
B. Point of inflection
C. Point of contraflexure
D. Point of zero stress
7. What is the unit of strain?
A. Pascal
B. Unitless
C. N-m
D. N-m/s
Volumetric stain is the:
A. change in volume per unit time
B. square root of difference of original volume and change in volume
C. original volume minus change in volume
D. ratio of change in volume to original volume
What refers to the stress in the material at the elastic limit?
A. Working stress
B. Yield stress
C. Ultimate stress
D. Maximum stress
Which of the following materials has the least modulus of elasticity?
A. Steel
B. Glass
C. Copper
D. Aluminum
Within elastic limit, the shear stress is proportional to shear strain. What is the constant of proportionality of this statement called?
A. Modulus of rigidity
B. Modulus of elasticity
C. Young’s modulus
D. Bulk modulus
What is the unit of the modulus of elasticity?
A. N-m
B. Unitless
C. Pa
D. N-m/s
Within elastic limit, the volumetric strain is proportional to the hydrostatic stress. What is the constant that relates these two quantities called?
A. Modulus of rigidity
B. Modulus of elasticity
C. Young’s modulus
D. Bulk modulus
How many times greater is the plastic range of strain as compared to the elastic range of strain?
A. 100
B. 200
C. 300
D. 400
What is another term for modulus of rigidity?
A. Shear modulus
B. Young’s modulus
C. Bulk modulus
D. Modulus of elasticity
Stiffness is:
A. ratio of force to deformation
B. ratio of force to modulus of elasticity
C. ratio of product of cross-sectional area and initial length to deformation
D. ratio of initial length to cross-sectional area
Which of the following substances has the least average coefficient of linear thermal expansion?
A. Copper
B. Concrete
C. Steel
D. Tin
Steel has a modulus of elasticity of _____ MPa
A. 200
B. 2,000
C. 20,000
D. 200,000
What is the maximum moment of a beam supported at both ends and carries a uniform load of w throughout its entire length?
A. wL / 2
B. wL / 8
C. wL2 / 8
D. wL2 / 4
____ is the stress beyond which the material will not return to its original shape when unloaded but will retain a permanent deformation
A. Elastic limit
B. Proportional limit
C. Yield limit
D. Yield strength
All are methods of determining the bar force of a truss member except one. Which one?
A. Method of joints
B. Method of section
C. Method of virtual work
D. Maxwell diagram
A simply supported beam, 10 m long carries a uniform distributed load of 20 kN/m. What is the value of the maximum moment of the beam due to the load?
A. 10,000 kN-m
B. 5,000 kN-m
C. 2,000 kN-m
D. 250 kN-m
Determine the force required to punch a ½ inch hole on a 3/8 thick plate if the ultimate shearing strength of the plate is 50,000 psi.
A. 23,562 lbs
B. 19,450 lbs
C. 20,550 lbs
D. 15,422 lbs
A cylindrical water tank is 8 m in diameter and 12 m high. If the tank is to be completely filled, determine the minimum thickness of the tank plating if the stress is limited to 40 MPa.
A. 11.77 mm
B. 13.18 mm
C. 10.25 mm
D. 12.60 mm
The stress in a 90-cm diameter pipe having a wall thickness of 9.5 cm and under a static head of 70 m of water is
A. 325 kPa
B. 32.5 kPa
C. 32.5 MPa
D. 3.25 MPa
An iron steam pipe is 200 ft long at 0oC. What will be its increase in length when heated to 100oC? Coefficient of linear expansion is 30 x 10^-6 per oC.
A. 0.18 ft
B. 0.12 ft
C. 0.20 ft
D. 0.28 ft
A steel railroad rails 10 m long are laid with clearance of 3 mm at a temperature of 15oC. At what temperature will the rails just touch? If there were no initial clearance Assume: alpha = 11.7 micro m/m deg.C and E = 200 GPa.
A. 46.90 deg
B. 56.06 deg
C. 50.36 deg
D. 40.64 deg
A cylinder of diameter 1.0 cm at 30oC is to be slide into a hole on a steel plate. The hole has a diameter of 0.99970 cm at 30oC. To what temperature the plate must be heated? Coefficient of linear expansion for steel is 1.2 x 10^-5 per oC.
A. 62oC
B. 55oC
C. 48oC
D. 65oC
A solid shaft 2.0 m long is transmitting 27 kN-m torque. If the shear modulus of the shaft material is 85 GPa and the allowable shearing stress is 70 MPa, determine the angle of twist between the two ends of the shaft.
A. 1.52o
B. 1.02o
C. 1.44o
D. 1.32o
Determine the maximum shearing stress in a helical steel spring composed of 20 turns of 20 mm diameter wire on mean radius of 80 mm when the spring is supporting a load of 20 kN?
A. 529 Gpa
B. 370 Pa
C. 25 kPa
D. 121 MPa
A 14-ft simple beam uniformly loaded with 200 pounds per foot over its entire length. If the beam is 3.625 in wide and 7.625 in deep, what is the maximum bending stress?
A. 7974 lbf/in2
B. 8205 lbf/in2
C. 6332 lbf/in2
D. 1674 lbf/in2
A 19-foot beam 10 inches wide and 20 inches high supports 1500 lb/ft on two supports 14 feet apart. The right end of the beam extends 2 feet past the support. What is the shearing stress midway between supports?
A. 1.0 psi
B. 10 psi
C. 67 psi
D. 2.0 psi
High strength steel band saw, 20 mm wide and 0.8 mm thick runs over the pulley 600 mm in diameter of pulleys can be used without exceeding the flexural stress of 400 MPa? Note: E = 200 GPa.
A. 250 cm
B. 325 mm
C. 400 mm
D. 150 in.
What weight in pounds can be lifted by a screw that has an efficiency of 80% if it is operated by a 50 lb force at the end of a 30 inched lever and the pitch of the screw is ½ inch?
A. 15,080
B. 15,500
C. 10,000
D. 12,000
Strength of materials can most aptly be described as “statics of deformable _______ bodies”.
A. elastic
B. rigid
C. compressible
D. thermal
It states that the elongation is proportional to the force
A. Pascal’s Law
B. Hooke’s Law
C. Young’s Theorem
D. Farrell’s Law
The modulus of elasticity is also known as
A. Young’s modulus
B. Modulus of rigidity
C. Hooke’s ratio
D. Yield strength
A ________ material is one having a relatively large tensile strain up to the point of rupture
A. malleable
B. brittle
C. conductible
D. ductile
A ________ material has a relatively small strain up to the point of rupture
A. brittle
B. malleable
C. ductile
D. conductible
The maximum stress that may be developed during a simple tension that the stress is a linear function of strain.
A. elastic limit
B. proportional limit
C. yield point
D. rupture point
The maximum stress that may be developed during a simple tension test such that there is no permanent or residual deformation when the load is entirely removed
A. elastic limit
B. proportional limit
C. yield point
D. rupture point
The region of the stress-strain curve extending from the origin to the proportional limit is called
A. rigid range
B. malleable range
C. elastic range
D. plastic range
The region of the stress-strain curve extending from the proportional limit to the point of rupture is called
A. rigid range
B. malleable range
C. elastic range
D. plastic range
The ordinate of the point at which there is an increase in strain with no increase in stress is known as
A. elastic limit
B. proportional limit
C. yield point
D. rupture point
The ratio of the strain in the lateral direction to that in the axial direction
A. Pascal’s Number
B. Factor of Safety
C. Young’s Modulus
D. Poisson’s ratio
Defined as the ratio of the ultimate strength to the specific weight
A. Specific Strength
B. Specific Rigidity
C. Specific Modulus
D. Specific Gravity
Defined as the ratio of the Young’s modulus to the specific weight
A. Specific Strength
B. Specific Rigidity
C. Specific Modulus
D. Specific Gravity
74. The typical Young’s modulus of steel is
A. 145 – 170 GPa
B. 195 – 210 GPa
C. 225 – 240 GPa
D. 275 – 310 GPa
Poisson’s ratio of glass
A. 0.16
B. 0.19
C. 0.23
D. 0.27
One Newton per square meter is one
A. Joule
B. Watt
C. Pascal
D. Kelvin
It is the change in shape and / or size of a continuum body after it undergoes a displacement between an initial and a deformed configuration
A. Deformation
B. Distortion
C. Deflection
D. Dilation
