1) Which of the following principle recognizes human capabilities and limitations using design effective handling equipment?
a. Safety principle
b. Obsolescence principle
c. Ecology principle
d. Ergonomic principle
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Answer
Explanation
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ANSWER: Ergonomic principle
Explanation:
No explanation is available for this question!
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2) What does DFMA stand for?
a. Design for Manual Assembly
b. Design for Manufacture and Assembly
c. Both a. and b.
d. None of the above
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Answer
Explanation
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ANSWER: Both a. and b.
Explanation:
No explanation is available for this question!
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3) A cylinder made of plain carbon steel has inner diameter 100 mm. What is the thickness of cylinder if maximum internal pressure of 20 Mpa acts on it? ( σall = 100 N/mm2 & poisson's ratio = 0.3)
a. 11 mm
b. 15.36 mm
c. 22.32 mm
d. 80 mm
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Answer
Explanation
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ANSWER: 11 mm
Explanation:
No explanation is available for this question!
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4) The ratio of di / t for thick cylinder is __________
(where di = inner diameter, t = wall thickness)
a. greater than 20
b. less than 20
c. equal to 20
d. none of the above
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Answer
Explanation
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ANSWER: less than 20
Explanation:
No explanation is available for this question!
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5) Which criteria of failure is used to indicate St Venent's theory?
a. Maximum principle stress theory
b. Maximum principle strain theory
c. Shear stress theory
d. None of the above
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Answer
Explanation
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ANSWER: Maximum principle strain theory
Explanation:
No explanation is available for this question!
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6) Which equation is used to determine wall thickness for brittle materials?
a. Brinie's equation
b. Claviro's equation
c. Lame's equation
d. All of the above
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Answer
Explanation
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ANSWER: Lame's equation
Explanation:
No explanation is available for this question!
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7) Claviro's equation is applicable to cylinders with _______
a. close ends
b. open ends
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: close ends
Explanation:
No explanation is available for this question!
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8) Due to which effect, compressive residual stress of strain-hardening model is smaller than elastic-perfectly plastic model?
a. Seeback effect
b. Peltier effect
c. Bauschinger effect
d. None of the above
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Answer
Explanation
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ANSWER: Bauschinger effect
Explanation:
No explanation is available for this question!
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9) Why is autofrettage process used in pressure vessels?
a. Increase fatigue lifetime
b. To enhance carrying capacity
c. To introduce compressive residual stress in them
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) Which equation is used to calculate thickness of an alloy steel cylinder with open ends?
a. Clavarino's equation
b. Birnie's equation
c. Lame's equation
d. None of the above
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Answer
Explanation
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ANSWER: Birnie's equation
Explanation:
No explanation is available for this question!
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