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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.

A beam is loaded as cantilever. If the load at the end is increased, the failure will occur ___________________?

A in the middle

B at the tip below the load

C at the support

D anywhere

Review Detailed Answer

Correct Answer: anywhere

The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be _________________?

A 1:2

B 1 : 3

C 1 : 4

D 1 : 2.5

Review Detailed Answer

Correct Answer: 1 : 3

In riveted boiler joints, all stresses, shearing, bearing and tensile are based on the_________________?

A size of rivet

B size of the drilled or reamed hole

C average of size of rivet and hole

D smaller of the two

Review Detailed Answer

Correct Answer: size of the drilled or reamed hole

Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the unpunched plate in_________________?

A tension

B compression

C bearing

D any one of the above

Review Detailed Answer

Correct Answer: tension

A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as______________________?

A chain riveted joint

B diamond riveted joint

C criss-cross riveted joint

D zig-zag riveted joint

Review Detailed Answer

Correct Answer: chain riveted joint

If the rivets in adjacent rows are staggered and the outermost row has only one rivet, the arrangement of the rivets is called__________________?

A chain riveting

B zig zag riveting

C diamond riveting

D criss-cross riveting

Review Detailed Answer

Correct Answer: diamond riveting

Rivets are made of following type of material_________________?

A tough

B hard

C resilient

D ductile

Review Detailed Answer

Correct Answer: ductile

The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is_______________?

A same

B double

C half

D four times

Review Detailed Answer

Correct Answer: half

A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m , then the hoop stress will be_________________?

A 30 MN/m2

B 50 MN/m2

C 100 MN/m2

D 200 MN/m2

Review Detailed Answer

Correct Answer: 100 MN/m2

Longitudinal stress in a thin cylinder is__________________?

A equal to the hoop stress

B twice the hoop stress

C half of the hoop stress

D one-fourth of hoop stress

Review Detailed Answer

Correct Answer: half of the hoop stress

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

A beam is loaded as cantilever. If the load at the end is increased, the failure will occur ___________________?

The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be _________________?

In riveted boiler joints, all stresses, shearing, bearing and tensile are based on the_________________?

Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the unpunched plate in_________________?

A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as______________________?

If the rivets in adjacent rows are staggered and the outermost row has only one rivet, the arrangement of the rivets is called__________________?

Rivets are made of following type of material_________________?

The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is_______________?

A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m , then the hoop stress will be_________________?

Longitudinal stress in a thin cylinder is__________________?