Related Questions

For high speed engines, the cam follower should move with
A uniform velocity
B simple harmonic motion
C uniform acceleration and retardation
D cyclodial motion
The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where $$\omega $$ = Angular velocity of the cam shaft)
A $$\omega \left( {{{\text{r}}_1}{{\text{r}}_2}} \right)\sin \theta $$
B $$\omega \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)\sin \theta \sec 2\theta $$
C $$\omega \left( {{{\text{r}}_1}{{\text{r}}_2}} \right)\cos \theta $$
D $$\omega \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)\cos \theta \,{\text{cosec2}}\theta $$
The period during which the cam follower remains at rest, when cam moves, is known as
A Constant period
B Fixed period
C Dwell period
D Idle period
The cam follower generally used in automobile engines is
A knife edge follower
B flat faced follower
C spherical faced follower
D roller follower
The cam follower generally used in aircraft engines is
A knife edge follower
B flat faced follower
C spherical faced follower
D roller follower
The cam follower extensively used in aircraft engines is
A Knife edge follower
B Flat faced follower
C Spherical faced follower
D Roller follower
The difference between CAD and CAM is that CAD software is directed at product design while CAM software is:
A concerned with production and control of tool design
B concerned with management programs
C designed for communications
D specifically for PC-board design
E None of the above
For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is
A maximum and zero
B zero and maximum
C minimum and maximum
D zero and minimum
The cam and follower is an example of
A sliding pair
B rolling pair
C lower pair
D higher pair
In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done
A Because of difficulty in manufacturing cam profile
B Because of loose contact of follower with cam surface
C In order to have acceleration in beginning and retardation at the end of stroke within the finite limits
D Because the uniform velocity motion is a partial parabolic motion

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