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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

Klein’s construction can be used when_________________?
A crank has a uniform angular velocity
B crank has non-uniform velocity
C crank has uniform angular acceleration
D crank has uniform angular velocity and angular acceleration
Correct Answer: crank has a uniform angular velocity
Corioli’s component acts________________?
A perpendicular to sliding surfaces
B along sliding surfaces
C somewhere in between above two
D unpredictable
Correct Answer: perpendicular to sliding surfaces
Corioli’s component is encountered in_________________?
A quick return mechanism of shaper
B four bar chain mechanism
C slider crank mechanism
D A. and C. above
Correct Answer: quick return mechanism of shaper
The magnitude of tangential acceleration is equal to____________________?
A velocity2 x crank radius
B velocityvcrankradius
C (velocity/crankradius)
D velocity x crank radius2
Correct Answer: velocityvcrankradius
The direction of Corioli’s component of acceleration is the direction _____________________?
A of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link
B along the centripetal acceleration
C along tangential acceleration
D along perpendicular to angular velocity
Correct Answer: of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link
Angular acceleration of a link can be determined by dividing the___________________?
A centripetal component of acceleration with length of link
B tangential component of acceleration with length of link
C resultant acceleration with length of link
D all of the above
Correct Answer: tangential component of acceleration with length of link
In a rigid link OA, velocity of A w.r.t. will be___________________?
A parallel to OA
B perpendicular to OA
C at 45° to OA
D along AO
Correct Answer: perpendicular to OA
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line________________?
A joining the corresponding points
B perpendicular to line as per A.
C not possible to determine with these data
D at 45° to line as per A.
Correct Answer: joining the corresponding points
Which is the false statement about the properties of instantaneous center____________________?
A at the instantaneous center of rotation, one rigid link rotates instantaneously relative to another for the configuration of mechanism considered
B the two rigid links have no linear velocities relative to each other at the instantaneous centre
C the two rigid links which have no linear velocity relative to each other at this center have the same linear velocity to the third rigid link
D the double centre can be denoted either by 02 or Ol2, but proper selection should be made
Correct Answer: the double centre can be denoted either by 02 or Ol2, but proper selection should be made
If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be_______________?
A less
B more
C same
D data are insufficient to determine same
Correct Answer: less
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