Category: Theory of Machines Mcqs

A.Highly rough surfaces
B.Rough surfaces
C.Smooth surfaces
D.Polished surfaces
E.Tan ? can never be greater than

A.Lie in different planes
B.Lie in a plane perpendicular to the plane of motion
C.Lie in the same plane as the plane of motion
D.Lie on a straight line
E.None of the above

A.Turning pair
B.Rolling pair
C.Spherical pair
D.Sliding pair
E.Helical pair

A.unbalanced primary forces
B.unbalanced secondary forces
C.partial balancing
D.None of the above

A.Involute
B.Epicycloid
C.Cycloid
D.Hypocycloid
E.None of the above

A.Common normal at the point of contact always passes through a fixed point (pitch point) on the line joining the centres of rotation
B.Teeth should be involute type
C.Teeth should be cycloidal type
D.Clearance should be minimum 0.15 mm
E.The gears whould be cut with the cutter having same module

A.There is surface contact between the two elements while in the motion
B.There is line contact between the two elements while in the motion
C.There is point contact between the two elements while is motion
D.The contact is only at lower end of the two elements while in motion
E.None of the above

A.Width of the gear tooth
B.Curve forming face and flank
C.Surface of the top of the tooth
D.Radius that connects the root circle to the profile of the tooth
E.Part of the tooth surface lying below the pitch surface

A.Have no slip
B.Have maximum slip during starting
C.Slip in proportion to the time of operation
D.Are used to determine the life time of a belt
E.None of the above

A.The angle subtended by the live portion of the cam for a definite displacement of the follower
B.The angle subtended by live portion of the cam at the cam centre
C.The angle subtended at the cam centre by the protion of the cam during which the follower moves
D.The angle subtended by the cam at the cam centre when the follower dwells
E.None of the above