Cam angle is defined as the angle

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

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

Angle of ascent of cam is defined as the angle

A

during which the follower returns to its initial position

B

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

C

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

D

moved 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

A

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

B

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

C

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

D

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

Angle of descent of cam is defined as the angle

A

During which the follower returns to its initial position

B

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

C

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

D

Moved 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

A

During which the follower returns to its initial position

B

Of rotation of the cam for definite displacement of the follower

C

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

D

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

The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the

A

Pitch circle

B

Base circle

C

Pitch curve

D

Prime circle

The pressure angle of a cam depends upon

A

offset between centre lines of cam and follower

B

lift of follower

C

angle of ascent

D

all of the mentioned

The maximum value of the pressure angle in case of cam is kept as

A

10°

B

14°

C

20°

D

30°

Cam angle is defined as the angle

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