In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

A Total lift, total angle of lift, minimum radius of cam and cam speed
B Radius of circular arc, cam speed, location of centre of circular arc and roller diameter
C Mass of cam follower linkage, spring stiffness and cam speed
D Total lift, centre of gravity of the cam and cam speed

Correct Answer: Total lift, total angle of lift, minimum radius of cam and cam speed

Bissoy MCQ
#Mechanical Engineering #Theory of Machine

Related Questions

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 acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by
A $${\omega ^2}{\text{R}}\cos \theta $$
B $${\omega ^2}\left( {{\text{R}} - {{\text{r}}_1}} \right)\cos \theta $$
C $${\omega ^2}\left( {{\text{R}} - {{\text{r}}_1}} \right)\sin \theta $$
D $${\omega ^2}{{\text{r}}_1}\sin \theta $$
The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)
A $${\omega ^2} \times {\text{OQ}}$$
B $${\omega ^2} \times {\text{OQ}}\sin \theta $$
C $${\omega ^2} \times {\text{OQ}}\cos \theta $$
D $${\omega ^2} \times {\text{OQtan}}\theta $$
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by
A $${\omega ^2}\left( {{{\text{r}}_1}{{\text{r}}_2}} \right)\left( {1 - {{\cos }^2}\theta } \right)$$
B $${\omega ^2}\left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)\left( {1 + {{\cos }^2}\theta } \right)$$
C $${\omega ^2}\left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)\left( {\frac{{2 - {{\cos }^2}\theta }}{{{{\cos }^3}\theta }}} \right)$$
D $${\omega ^2}\left( {{{\text{r}}_1} - {{\text{r}}_2}} \right)\left( {1 - {{\sin }^2}\theta } \right)$$
The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by
A $$\omega {\text{R}}\cos \theta $$
B $$\omega \left( {{\text{R}} - {{\text{r}}_1}} \right)\cos \theta $$
C $$\omega \left( {{\text{R}} - {{\text{r}}_1}} \right)\sin \theta $$
D $$\omega {{\text{r}}_1}\sin \theta $$
A cam with a roller follower would constitute following type of pair
A Lower pair
B Higher pair
C Open pair
D Close pair
If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as
A ARC
B Short ARC
C ARC length
D ARC blow
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
If the tension in a cable supporting a lift moving upwards is twice the tension when the lift is moving downwards, the acceleration of the lift, is
A $$\frac{{\text{g}}}{2}$$
B $$\frac{{\text{g}}}{3}$$
C $$\frac{{\text{g}}}{4}$$
D $$\frac{{\text{g}}}{5}$$
In a metal arc welding process, a gas metal arc welding with magnetized flux is used and can be done in all the positions i.e. flat position, vertical position or inclined position.
A Globular transfer
B Spray transfer
C GMAW practice
D Dip transfer

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