Category: Theory of Machines Mcqs

A.It must have only unidirectional acceleration
B.It must have two components of acceleration e.g. centripetal, and tangential
C.It must have three components of acceleration e.g. centripetal centrifugal and tangential
D.It must have three components of acceleration e.g. centripetal, centrifugal and gravitational
E.It must have four components of acceleration e.g. centripetal, centrifugal gravitational and tangential

A.Drive system may be changed
B.3 Vee belts using 3 groove pulley may be used
C.Gear system may be adopted
D.Toothed belts may be used
E.Machine arrangement may be modified

A.One
B.Two
C.Three
D.Four
E.Six

A.Critically damped
B.Damped to safe limits
C.Damped to 1% of critical speed
D.Partly damped
E.Free from vibrations

A.Maximum value of frictional force when a body is about to move
B.Friction between two well lubricated bodies
C.Friction force acting when the body is in motion
D.Driction force which keeps a body in motion
E.None of the above

A.Automobiles
B.Small engines
C.When driver and driven units are far off
D.Heavy duty machines
E.None of the above

A.tangential to the friction circles at the ends
B.along the friction axis
C.inclined to axis of link by an angle ?, known as angle of friction
D.All the above

A.Secondary critical speed effect
B.Primary critical speed effect
C.Unbalanced parts of fan
D.Aerodynamic unbalance
E.Vibration in air

A.Is the same as that of velocity
B.Is opposite to the velocity
C.Could be either the same or opposite to velocity
D.Is always in a plane perpendicular to the plane of motion
E.None of the above

A.Bush bearing
B.Sleeve bearing
C.Ball bearing
D.Roller bearing
E.Needle roller bearing