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Objective Questions
Engineering
Mechanical
ME Set-1
Strength of Materials
184

Strength of Materials MCQ with Answers

184) The ductility of a material ______ with the increase in percentage reduction in area of a specimen under tensile test.

increase

decreases

remains same

none of these

Answer is:

increase

Strength of Materials MCQ with Answers

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185) The ductility of the material ______ with the decrease in percentage elongation of a specimen under tensile test

increases

decreases

remains same

none of the above

Answer is:

decreases

186) Factor of safety is defined as the ratio of

ultimate stress to working stress

working stress to ultimate stress

breaking stress to ultimate stress

ultimate stress to breaking stress

Answer is:

ultimate stress to working stress

Explanation:

The ratio of ultimate stress to the working stress is known as factor of safety. Its value is more than one.

187) In compression test, the fracture in cast iron specimen would occur along

the axis of load

an oblique plane

at right angles to the axis of specimen

would not occur

Answer is:

an oblique plane

188) Fatigue test is carried out for

stresses varying between two limits of equal value, but of opposite sign

stresses varying between two limits of unequal value, but of opposite sign

stresses varying between two limits of unequal value but of same sign

all of the above

Answer is:

all of the above

Strength of Materials MCQ with Answers

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184) The ductility of a material ______ with the increase in percentage reduction in area of a specimen under tensile test.

increase

Strength of Materials MCQ with Answers

Related Strength of Materials MCQ with Answers

185) The ductility of the material ______ with the decrease in percentage elongation of a specimen under tensile test

decreases

186) Factor of safety is defined as the ratio of

ultimate stress to working stress

187) In compression test, the fracture in cast iron specimen would occur along

an oblique plane

188) Fatigue test is carried out for

all of the above

Strength of Materials MCQ with Answers