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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.

Gamma iron exits at following temperature___________________?

A room temperature

B near melting point

C between 1400°C and 1539°C

D between 910°C and 1400°C

Review Detailed Answer

Correct Answer: between 910°C and 1400°C

Pure iron is the structure of_______________?

A ferrite

B pearlite

C anstenite

D ferrite and cementite

Review Detailed Answer

Correct Answer: ferrite

Cast iron is characterised by minimum of following %age of carbon_________________?

A 0.2%

B 0.8%

C 1.3%

D 2%

Review Detailed Answer

Correct Answer: 2%

The molecules in a solid move______________?

A in a random manner

B in a haphazard way

C in circular motion

D back and forth like tiny pendulums

Review Detailed Answer

Correct Answer: back and forth like tiny pendulums

Paramagnetic alpha iron changes to gamma iron at_______________?

A 770°C

B 910°C

C 1440°C

D 1539°C

Review Detailed Answer

Correct Answer: 910°C

The crystal structure of gamma iron is_________________?

A body centred cubic

B face centred cubic

C hexagonal close packed

D cubic structure

Review Detailed Answer

Correct Answer: face centred cubic

The metallic structure of mild steel is_________________?

A body centred cubic

B face centred cubic

C hexagonal close packed

D cubic structure

Review Detailed Answer

Correct Answer: body centred cubic

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

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Gamma iron exits at following temperature___________________?

Pure iron is the structure of_______________?

Cast iron is characterised by minimum of following %age of carbon_________________?

The molecules in a solid move______________?

Paramagnetic alpha iron changes to gamma iron at_______________?

The crystal structure of gamma iron is_________________?

The metallic structure of mild steel is_________________?

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_____________________?