Angle of ascent of cam 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 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

Cam angle 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 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

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

A

A small value of pressure angle

B

A large value of pressure angle

C

There is no such relation with pressure angle

D

Something else

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 ascent of the mountain is ------, but anyone who makes it to the top is rewarded by a spectacular view.

A

helpful

B

easy

C

unique

D

unpleasant

Angle of ascent of cam is defined as the angle

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