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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