14) The Young′s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length

half

same amount

double

one-fourth

Answer is:

same amount

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

50%

25%

15%

Answer is:

0%

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

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14) The Young′s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length

same amount

Engineering Materials MCQ with Answers

Related Engineering Materials MCQ with Answers

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

0%

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

Engineering Materials MCQ with Answers