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Discussion
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Mechanical Engineering
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Strength of Materials
See What Others Are Saying!
Question
The ratio of linear stress to the linear strain is called
Options
A. modulus of rigidity
B. modulus of elasticity
C. bulk modulus
D. Poisson's ratio
Correct Answer
modulus of elasticity
More questions
1. Thread grinding requires work speed from
Options
A. 1 to 3 m/min
B. 5 to 10 m/min
C. 10 to 14 m/min
D. 14 to 20 m/min
Show Answer
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Correct Answer: 1 to 3 m/min
2. The atomic mass of sulphur is
Options
A. 12
B. 14
C. 16
D. 32
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Correct Answer: 32
3. In low carbon steels, __________ raises the yield point and improves the resistance to atmospheric corrosion.
Options
A. sulphur
B. phosphorus
C. manganese
D. silicon
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Correct Answer: phosphorus
4. In a petrol engine, the mixture has the lowest pressure at the
Options
A. beginning of suction stroke
B. end of suction stroke
C. end of compression stroke
D. none of these
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Correct Answer: end of suction stroke
5. In unilateral system of tolerance, the tolerance is allowed on
Options
A. one side of the actual size
B. one side of the nominal size
C. both sides of the actual size
D. both sides of the nominal size
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Correct Answer: one side of the nominal size
6. Thermit welding is often used in
Options
A. replacing broken gear teeth
B. repairing broken shears
C. joining rails, truck frames and locomotive frames etc.
D. all of the above
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Correct Answer: all of the above
7. The load required to produce a unit deflection in a spring is called
Options
A. flexural rigidity
B. torsional rigidity
C. spring stiffness
D. Young's modulus
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Correct Answer: spring stiffness
8. In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
Options
A. high metal removal rate
B. dry machining
C. use of soft cutting tool
D. surface finish
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Correct Answer: surface finish
9. Steam turbines may be classified according to
Options
A. direction of steam flow
B. number of stages
C. mode of steam action
D. all of these
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Correct Answer: all of these
10. In metal machining, the work-tool contact zone is a zone where heat is generated due to
Options
A. plastic deformation of metal
B. burnishing friction
C. friction between the moving chip and the tool face
D. none of the above
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Correct Answer: burnishing friction
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