Mechanical Engineering MCQs

Page No. 117

Cylindrical cams can be classified as_________________?


acircular


btangent


creciprocating


dnone of the above


View Answer none of the above

For the same lift and same angle of ascent, a smaller base circle will give_______________?


aa small value of pressure angle


ba large value of pressure angle


cthere is no such relation with pressure angle


dsomething else



Angle of descent of cam is defined as the angle__________________?


aduring which the follower returns to its initial position


bof rotation of the cam for a definite displacement of the follower


cthrough which the cam rotates during the period in which the follower remains in the highest position


dmoved by the cam from the instant the follower begins to rise, till it reaches its highest position



Angle of dwell of cam is defined as the angle________________?


aduring which the follower returns to its initial position


bof rotation of the cam for definite dis¬placement of the follower


cthrough which the cam rotates during the period in which the follower remains in the highest position


dmoved by the cam from the instant the follower begins to rise, till it reaches its highest position



Cam angle is defined as the angle_________________?


aduring which the follower returns to its initial position


bof rotation of the cam for a definite displacement of the follower


cthrough which, the cam rotates during the period in which the follower remains in the highest position


dmoved by the cam from the instant the follower begins to rise, till it reaches its highest position



Angle of action of cam is defined as the angle ____________________?


aduring which the follower returns to its initial position


bof rotation of the cam for a definite displacement of the follower


cthrough which the cam rotates during the period in which the follower remains in the highest position


dmoved by the cam from beginning of ascent to the termination of descent



Angle of ascent of cam is defined as the angle___________________?


aduring which the follower returns to its initial position


bof rotation of the cam for a definite displacement of the follower


cthrough which the cam rotates during the period in which the follower remains in highest position


dmoved by the cam from the instant the follower begins to rise, till it reaches its highest position



The pressure angle of a cam depends upon___________________?


aoffset between centre lines of cam and follower


blift of follower


cangle of ascent


dall of the above


View Answer all of the above

Klein’s construction can be used when_________________?


acrank has a uniform angular velocity


bcrank has non-uniform velocity


ccrank has uniform angular acceleration


dcrank has uniform angular velocity and angular acceleration



Corioli’s component acts________________?


aperpendicular to sliding surfaces


balong sliding surfaces


csomewhere in between above two


dunpredictable



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