Element of Machine Design Topic 1- 1
Quiz
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Science, Design, Education
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University
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Practice Problem
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Hard
Amey Gaurvadkar
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This type of design depends upon mathematical formulae of principle of mechanics.
•Rational design.
•Empirical design.
•Industrial design.
•Optimum design.
Answer explanation
Rational design refers to the approach of designing structures, machines, or systems based on well-established mathematical principles, such as the principles of mechanics. Engineers use mathematical formulae and theoretical analysis to develop rational designs that are well-founded and can be confidently justified. This method is in contrast to empirical design, which relies on trial and error, testing, and past experiences without a deep understanding of the underlying scientific principles. Industrial design, on the other hand, pertains more to the aesthetic and functional aspects of product design, while optimum design focuses on finding the best possible solution given specific constraints and objectives.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of stress is a combination of tensile and compressive stresses, leading to a change in the shape of the material without any change in its volume?
Tensile stress
Compressive stress
Shear stress
Bending stress
Answer explanation
Explanation: Bending stress occurs when a combination of tensile and compressive stresses act on an element, leading to a change in the shape of the material without any change in its volume. This type of stress is experienced in objects subjected to bending forces, like beams and bridges.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of stress is also known as "pulling" stress and occurs when forces act to elongate or stretch the material?
Tensile stress
Compressive stress
Shear stress
Torsional stress
Answer explanation
Explanation: Tensile stress, also known as "pulling" stress, occurs when forces act to elongate or stretch the material. It leads to an increase in the element's length. Tensile stress is commonly experienced when you stretch a rubber band.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This type of design depends upon empirical formulae based on the practice and past experience.
•Rational design.
•Empirical design.
•Industrial design.
•Optimum design.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It is the best design for the given objective function under the specified constraints. It may be achieved by minimising the undesirable effects
Rational design
Empirical design
Industrial design
Optimum design
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
________ is the ability of a material to resist deformation under stress
Stiffness
Strength
Elasticity
Plasticity
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
________ is the property of a material enabling it to be drawn into wire with the application of a tensile force.
Ductility
Plasticity
Elasticity
Brittleness
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