Mechanical Engineering MCQs

2075 MCQs  (Page 70 of 208)

Attempt Mechanical Engineering Mcqs Quiz
Which of the following materials is most elastic_________________?
A. Rubber
B. Plastic
C. Brass
D. Steel
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In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is_________________?
A. More
B. Less
C. Same
D. More/less depending on composition
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Which of the following has no unit __________________?
A. Kinematic viscosity
B. Surface tension
C. Bulk modulus
D. Strain
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During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate tensile strength of specimen is___________________?
A. 4 tonnes/cm2
B. 8 tonnes/cm2
C. 16 tonnes/cm2
D. 22 tonnes/cm2
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The intensity of stress which causes unit strain is called_______________?
A. Unit stress
B. Bulk modulus
C. Modulus of rigidity
D. Modulus of elasticity
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The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length________________?
A. Half
B. Same amount
C. Double
D. One-fourth
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Tensile strength of a material is obtained by dividing the maximum load during the test by the_________________?
A. Area at the time of fracture
B. Original cross-sectional area
C. Average of a. and b.
D. Minimum area after fracture
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If the radius of wire stretched by a load is doubled, then its Young’s modulus will be_______________?
A. doubled
B. halved
C. become four times
D. become one-fourth
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A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?
A. Uniform throughout
B. Increase uniformly
C. First increase and then decrease
D. Increase uniformly first and then increase rapidly
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The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?
A. Same
B. More
C. Less
D. More or less depending on other factors
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Word of the Day
28 Sep
Expatriate
a person who lives outside their native country.
ملک بدری، جلا وطن کرن، شہر بدر کرنا

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