15) Percentage reduction of area in performing tensile test on cast iron may be of the order of

50%

25%

15%

Answer is:

0%

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16) The intensity of stress which causes unit strain is called

unit stress

bulk modulus

modulus of rigidity

modulus of elasticity

Answer is:

modulus of elasticity

17) True stress-strain curve for materials is plotted between

load/original cross-sectional area and change in length/original length

load/instantaneous cross-sectional area original area and log.

load/instantaneous cross-sectional area and change in length/original length

load/instantaneous area and instantaneous area/original area

Answer is:

load/instantaneous cross-sectional area original area and log.

18) 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

4 tonnes/cm2

8 tonnes/cm2

16 tonnes/cm2

22 tonnes/cm2

Answer is:

8 tonnes/cm2

19) For steel, the ultimate strength in shear as compared to in tension is nearly

same

half

one-third

two-third

Answer is:

half

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15) Percentage reduction of area in performing tensile test on cast iron may be of the order of

0%

Engineering Materials MCQ with Answers

Related Engineering Materials MCQ with Answers

16) The intensity of stress which causes unit strain is called

modulus of elasticity

17) True stress-strain curve for materials is plotted between

load/instantaneous cross-sectional area original area and log.

18) 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

8 tonnes/cm2

19) For steel, the ultimate strength in shear as compared to in tension is nearly

half

Engineering Materials MCQ with Answers