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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.

Form coefficient of spring is _____________________?

A ratio of coil diameter to wire diameter

B load required to produce unit deflection

C its capability of storing energy

D concerned With strength of wire of spring

Review Detailed Answer

Correct Answer: its capability of storing energy

When two springs are in series (having stiffness K), the equivalent stiffness will be________________?

A K

B K/2

C 2K

D KIA

Review Detailed Answer

Correct Answer: K

If a spring is cut down into two springs, the stiffness of cut springs will be _________________?

A half

B same

C double

D unpredictable

Review Detailed Answer

Correct Answer: double

Aircraft body is usually fabricated by_________________?

A welding

B precasting

C rivetting

D casting

Review Detailed Answer

Correct Answer: rivetting

In hydrodynamic bearings_____________________?

A the oil film pressure is generated only by the rotation of the journal

B the oil film is maintained by supplying oil under pressure

C do not require external supply of lubricant

D grease is used for lubrication

Review Detailed Answer

Correct Answer: the oil film pressure is generated only by the rotation of the journal

If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by________________?

A ZN/p

B p/ZN

C Z/pN

D N/Zp

Review Detailed Answer

Correct Answer: ZN/p

In hydrostatic bearings ____________________?

A the Oil film pressure is generated only by the rotation of the journal

B the oil film is maintained by supplying oil under pressure

C do not require external supply of lubricant

D grease is used for lubrication

Review Detailed Answer

Correct Answer: the oil film is maintained by supplying oil under pressure

The rated life of a bearing varies___________________?

A directly as load

B inversely as square of load

C inversely as cube of load

D inversely as fourth power of load

Review Detailed Answer

Correct Answer: inversely as cube of load

In V-belt drive, belt touches______________?

A at bottom

B at sides only

C both at bottom and sides

D could touch anywhere

Review Detailed Answer

Correct Answer: at sides only

In cross or regular lay ropes_________________?

A direction of twist of wires in strands is opposite to the direction of twist of strands

B direction of twist of wires and strands are same

C wires in two adjacent strands are twisted in opposite direction

D wires are not twisted

Review Detailed Answer

Correct Answer: direction of twist of wires in strands is opposite to the direction of twist of strands

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Form coefficient of spring is _____________________?

When two springs are in series (having stiffness K), the equivalent stiffness will be________________?

If a spring is cut down into two springs, the stiffness of cut springs will be _________________?

Aircraft body is usually fabricated by_________________?

In hydrodynamic bearings_____________________?

If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by________________?

In hydrostatic bearings ____________________?

The rated life of a bearing varies___________________?

In V-belt drive, belt touches______________?

In cross or regular lay ropes_________________?