1) Which of the following is not a reason to design and redesign a product?
a. Optimum design
b. Innovation
c. Appearance
d. None of the above
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Answer
Explanation
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ANSWER: None of the above
Explanation:
No explanation is available for this question!
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2) The elongation of a bar is 0.5 mm, when a tensile stress of 200 N/mm2 acts on it. Determine original length of a bar if modulus of elasticity is 150 x 103.
a. 375.93 mm
b. 300 mm
c. 360 mm
d. None of the above
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Answer
Explanation
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ANSWER: 375.93 mm
Explanation:
No explanation is available for this question!
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3) Deformation per unit length is called as ________
a. strain
b. stress
c. modulus of elasticity
d. none of the above
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Answer
Explanation
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ANSWER: strain
Explanation:
No explanation is available for this question!
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4) The process of creating mechanisms and shapes of mechanical elements for a machine to get the desired output for a given input is called as ___
a. analysis
b. innovation
c. synthesis
d. designing
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Answer
Explanation
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ANSWER: synthesis
Explanation:
No explanation is available for this question!
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5) In design process, which process is followed after selecting the material?
a. Selecting factor of safety
b. Synthesis
c. Analysis of forces
d. Determining mode of failure
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Answer
Explanation
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ANSWER: Determining mode of failure
Explanation:
No explanation is available for this question!
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6) Which design consideration deals with appearance of the product?
a. Ergonomics
b. Aesthetics
c. System design
d. Creative design
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Answer
Explanation
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ANSWER: Aesthetics
Explanation:
No explanation is available for this question!
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7) The objective of considering ergonomics in machine design is to ____
1. decrease physical stresses
2. make user adapt to the machine
3. make machine fit for the user
4. improve appearance of the product
a. only 2
b. 3 and 4
c. 1 and 3
d. 1, 3 and 4
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Answer
Explanation
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ANSWER: 1 and 3
Explanation:
No explanation is available for this question!
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8) In stress-strain diagram, up to proportional limit ______
a. stress is inversely proportional to strain
b. force is directly proportional to displacement
c. stress is directly proportional to strain
d. strain is directly proportional to stress
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Answer
Explanation
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ANSWER: stress is directly proportional to strain
Explanation:
No explanation is available for this question!
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9) Which of the following materials do not have a well defined yield point?
a. Heat treated steel
b. Concrete
c. Carbon fiber
d. All of the above
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Answer
Explanation
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ANSWER: All of the above
Explanation:
No explanation is available for this question!
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10) Factor of safety is the ratio of _________
a. working stress and ultimate strength
b. yield strength and endurance strength
c. ultimate strength and yield strength
d. yield strength and working stress
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Answer
Explanation
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ANSWER: yield strength and working stress
Explanation:
No explanation is available for this question!
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