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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

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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.

All Topics  1919

Fibrous fracture occurs in_____________?
A ductile material
B brittle material
C elastic material
D hard material
Correct Answer: ductile material
A key made from a cylindrical disc having segmental cross-section, is known as______________?
A wood-ruff key
B feather key
C flat saddle key
D gib head key
Correct Answer: wood-ruff key
In order to obtain bolt of uniform strength____________________?
A increase shank diameter
B increase its length
C drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread
D tighten die bolt properly
Correct Answer: drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread
The pitch of threads on a Jock nut in comparison to pitch of nut is_________________?
A same
B coarser
C finer
D very coarse
Correct Answer: same
Transverse fillet welded joints are designed for________________?
A tensile strength
B compressive strength
C shear strength
D bending strength
Correct Answer: tensile strength
In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia of rivet d should be equal to__________________?
A d
B 1.25 d
C 1.5 d
D 1.75 d
Correct Answer: d
The edges of a boiler plate are bevelled to an angle of______________?
A 30°
B 45°
C 60°
D 80°
Correct Answer: 80°
Machine screws are________________?
A similar to small size tap bolts except that a greater variety of shapes of heads are available
B slotted for a screw driver and generally used with a nut
C used to prevent relative motion be-tween two parts
D similar to stud
Correct Answer: slotted for a screw driver and generally used with a nut
A self locking screw has________________>
A fine threads
B coarse threads
C coefficient of friction > tangent of load angle
D hole for inserting split pin
Correct Answer: coefficient of friction > tangent of load angle
Which is correct statement ?
A a member made of steel will generally be more rigid than a member of equal load-carrying ability made of cast iron
B a member made of cast iron will generally be. more rigid than a member of equal load carrying ability made of steel
C both will be equally rigid
D which one is rigid will depend on several other factors
Correct Answer: a member made of cast iron will generally be. more rigid than a member of equal load carrying ability made of steel
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