Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

The intensity of stress which causes unit strain is called_______________?

A unit stress

B bulk modulus

C modulus of rigidity

D modulus of elasticity

Review Detailed Answer

Correct Answer: modulus of elasticity

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

Review Detailed Answer

Correct Answer: 8 tonnes/cm2

Which of the following has no unit __________________?

A kinematic viscosity

B surface tension

C bulk modulus

D strain

Review Detailed Answer

Correct Answer: strain

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

Review Detailed Answer

Correct Answer: less

Which of the following materials is most elastic_________________?

A rubber

B plastic

C brass

D steel

Review Detailed Answer

Correct Answer: steel

The value of Poisson’s ratio for steel is between_________________?

A 0.01 to 0.1

B 0.23 to 0.27

C 0.25 to 0.33

D 0.4 to 0.6

Review Detailed Answer

Correct Answer: 0.25 to 0.33

The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight________________?

A of same magnitude as that of bar and applied at the lower end

B half the weight of bar applied at lower end

C half of the square of weight of bar applied at lower end

D one-fourth of weight of bar applied at lower end

Review Detailed Answer

Correct Answer: half the weight of bar applied at lower end

The materials which exhibit the same elastic properties in all directions are called______________?

A homogeneous

B inelastic

C isotropic

D isentropic

Review Detailed Answer

Correct Answer: isotropic

The property of a material which allows it to be drawn into a smaller section is called________________?

A plasticity

B ductility

C elasticity

D malleability

Review Detailed Answer

Correct Answer: ductility

The change in the unit volume of a material under tension with increase in its Poisson’s ratio will ________________?

A increase

B decrease

C remain same

D increase initially and then decrease

Review Detailed Answer

Correct Answer: decrease

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The intensity of stress which causes unit strain is called_______________?

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___________________?

Which of the following has no unit __________________?

In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is_________________?

Which of the following materials is most elastic_________________?

The value of Poisson’s ratio for steel is between_________________?

The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight________________?

The materials which exhibit the same elastic properties in all directions are called______________?

The property of a material which allows it to be drawn into a smaller section is called________________?

The change in the unit volume of a material under tension with increase in its Poisson’s ratio will ________________?