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 percentage of carbon in pig iron varies from___________________?

A 0.1 to 1.2%

B 1.5 to 2.5%

C 2.5 to 4%

D 4 to 4.5%

Review Detailed Answer

Correct Answer: 4 to 4.5%

Pig iron is the name given to________________?

A raw material for blast furnace

B product of blast furnace made by reduction of iron ore

C iron containing huge quantities of carbon

D iron in molten form in the ladles

Review Detailed Answer

Correct Answer: product of blast furnace made by reduction of iron ore

In nodular iron, graphite is in the form of_____________________?

A cementite

B free carbon

C flakes

D spheroids

Review Detailed Answer

Correct Answer: spheroids

Wrought iron is________________?

A hard

B high in strength

C highly resistant to corrosion

D heat treated to change its properties

Review Detailed Answer

Correct Answer: highly resistant to corrosion

A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as_________________?

A allotropic change

B recrystallisation

C heat treatment

D precipitation

Review Detailed Answer

Correct Answer: allotropic change

Cast iron has_________________?

A high tensile strength

B its elastic limit close to the ultimate breaking strength

C high ductility

D all of the above

Review Detailed Answer

Correct Answer: its elastic limit close to the ultimate breaking strength

An important property of malleable cast iron in comparison to grey cast iron is the high___________________?

A compressive strength

B ductility

C carbon content

D hardness

Review Detailed Answer

Correct Answer: ductility

Carbon steel is_______________?

A made by adding carbon in steel

B refined from cast iron

C an alloy of iron and carbon with varying quantities of phosphorus and sulphur

D extensively used for making cutting tools

Review Detailed Answer

Correct Answer: an alloy of iron and carbon with varying quantities of phosphorus and sulphur

‘Killed steels’ are those steels__________________?

A which are destroyed by burning

B which after their destruction are recycled to produce fresh steel

C which are deoxidised in the ladle with silicon and aluminium

D in which carbon is completely burnt

Review Detailed Answer

Correct Answer: which are deoxidised in the ladle with silicon and aluminium

The most effective inhibitor of grain growth, when added in small quantities is__________________?

A carbon

B vanadium

C manganese

D cobalt

Review Detailed Answer

Correct Answer: vanadium

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The percentage of carbon in pig iron varies from___________________?

Pig iron is the name given to________________?

In nodular iron, graphite is in the form of_____________________?

Wrought iron is________________?

A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as_________________?

Cast iron has_________________?

An important property of malleable cast iron in comparison to grey cast iron is the high___________________?

Carbon steel is_______________?

‘Killed steels’ are those steels__________________?

The most effective inhibitor of grain growth, when added in small quantities is__________________?